Metadata writeback/propagation issue

fisketjon · November 03, 2025, 03:45:35 PM

In a folder a have a canon cr3 raw file and a corresponding jpg, both of them has the same Metadata (Core data) Create Date and Date Subject Created.

I have setup Canon versioning to propagate
XMP All Data, disabled crop
+ Don't copy XMP orientation
+ Don't copy XMP Regions
+ Merge XMP keywords

If I copy the jpg to another folder (which is included in the version description) and rebuild relations for the master file (cr3) the copied file is correctly found as a version and the new version file gets a yellow pencil icon indicating there are pending metadata to be written.

List of tags to write shows contains

CreatorTool
DerivedFromDocumentID
DerivedFromInstanceID
DerivedFromOriginalDocumentID
DocumentID
InstanceID

Howver if I do the writeback, the Date Subject Created is also changed so that time is 0, but date is still correct. Why is this so, and how can it be avoided?

Mario · November 03, 2025, 04:07:11 PM

The XMP in the folder belongs to both the JPG and the RAW file. Maybe this explains your problem?

Provide a minimum of information:
Detailed propagation rules, sample images and XMP files, the IMatch log file and the contents of the ExifTool output panel after the write back that causes this.

Or, better, first have a look at the ExifTool output panel yourself, after the write-back. You can see exactly what IMatch has sent to ExifTool, which tags to write and their contents etc.

This can be caused to metadata already existing in your files, XMP sidecars, propagation, and many other factors you need to consider in detail before you let IMatch do all that.

Metadata is extremely complex. Mixing it with files which may share the same XMP sidecar file and metadata propagation can make your brain boil. I cannot envision and prepare for or handle each and every combination of factors user can produce by using the advanced metadata features in IMatch.

You need to analyze what IMatch and ExifTool are doing, if this is what you expect them to do etc.

fisketjon · November 04, 2025, 02:35:56 AM

I converted the RAW file to jpg with Canons DPP, the cropped the file With Corel Paint Shop Pro 2023.
I used ExifTool to list the metadata, which contains this data

[IPTC2] Date Created : 2023:04:08
[IPTC2] By-line : Njal Fisketjon
[IPTC2] Copyright Notice : Njal Fisketjon
[ExifIFD] Exif Version : 0231
[ExifIFD] Flashpix Version : 0100
[ExifIFD] Color Space : sRGB
[ExifIFD] Components Configuration : Y, Cb, Cr, -
[ExifIFD] Exif Image Width : 3228
[ExifIFD] Exif Image Height : 2153
[ExifIFD] User Comment :
[ExifIFD] Date/Time Original : 2023:04:08 16:00:54
[ExifIFD] Create Date : 2023:04:08 16:00:54

After the import into IMatch and writeback time has been set to zero (because missing IPTC2 Time Created?) AND
the time in Date/Time Original has also been set to 0. Is there a way to block IMatch from doing that. Why not take the time from Date/Time Original if IPTC2 time is missing, instead of erasing the original time?

[IPTC2] Date Created : 2023:04:08
[IPTC2] By-line : Njal Fisketjon
[IPTC2] Copyright Notice : Njal Fisketjon
[IPTC2] Time Created : 00:00:00+01:00
[IPTC2] Digital Creation Date : 2023:04:08
[IPTC2] Digital Creation Time : 16:00:54+02:00
[IPTC2] Application Record Version : 4
[ExifIFD] Exposure Time : 1/2000
[ExifIFD] F Number : 5.6
[ExifIFD] Exposure Program : Not Defined
[ExifIFD] ISO : 6400
[ExifIFD] Sensitivity Type : Recommended Exposure Index
[ExifIFD] Recommended Exposure Index : 6400
[ExifIFD] Exif Version : 0231
[ExifIFD] Date/Time Original : 2023:04:08 00:00:00
[ExifIFD] Create Date : 2023:04:08 16:00:54

I wish that I could put a lock on the metadata for Create Date and Date Subject Created so that the only way to change it would be from the metadata panel.

PandDLong · November 04, 2025, 04:48:01 AM

Quote from: fisketjon on November 04, 2025, 02:35:56 AMI converted the RAW file to jpg with Canons DPP, the cropped the file With Corel Paint Shop Pro 2023.

I use Corel Paint Shop Pro and it messes up metadata. I suspect the time is changing because the file has conflicting metadata and it needs to get aligned - often this alignment is done by Exif Tool.

The entire IPTC2 tag family that PSP creates/uses is not just legacy IPTC, it is an odd "group" within legacy metadata. I found it created problems and even deleting it is a challenge - I used the ExifTool forum to get advice from Phil and his experts on how to get rid of it.

I haven't used PSP for many months so my memory is fuzzy on how to manage around its issues - but I am pretty sure I make a point to not have PSP export any metadata and I use IMatch to propagate from a version with the correct metadata.

Hope that is helpful.

Michael

Mario · November 04, 2025, 10:29:17 AM

QuoteI converted the RAW file to jpg with Canons DPP, the cropped the file With Corel Pain

Do that again for another file and then import it into IMatch.
Which timestamps do you see in the Metadata Panel?
What is the result of running the Metadata Analyst on the file? If there are errors and warnings, use the BIG GREEN button to copy the results into your reply.
IMatch does not wipe out timestamps or resets times to zero, unless there is an issue with incoming timestamps.
Make sure you use IMatch 2025.6.2 because of release note 02907

fisketjon · November 04, 2025, 03:26:33 PM

I'm using IMatch 2025.6.2

Metadata Panel:
Create Date (XMP::xmp\CreateDate\CreateDate\0) 08.04.2023 16:00:54+02:00
Date Subject Created (XMP::photoshop\DateCreated\DateCreated\0) 08.04.2023 00:00:00

Metadata Analyst Results. Version 2025.6.2. 11/4/2025 3:12:28 PM
File analyzed: \\NFSERVER\originaler\Våre bilder\2023\2023-04\Canon EOS R7\IM_test_nov4.jpg
Errors: 0
Warnings: 42

Warning: [System] File has unwritten metadata (pending write-back).<br/>The metadata loaded from the image and the data in the database may not match.
Warning: [Metadata] Warnings: 'FileName encoding must be specified [x2]'
Warning: [EXIF] Offset TimeOriginal missing. 'Date Subject Created' may have no time zone offset.
Warning: [EXIF] Offset TimeDigitized missing. 'Create Date' may have no time zone offset.
Warning: [GPS] Date missing.
Warning: [GPS] Time missing.
Warning: [GPS] Latitude missing.
Warning: [GPS] Latitude Ref missing.
Warning: [GPS] Longitude missing.
Warning: [GPS] Longitude Ref missing.
Warning: [GPS] Altitude missing.
Warning: [XMP] [ExifIFD]:DateTimeOriginal not mapped to [XMP-photoshop]:DateCreated (embedded).
Warning: [XMP] [IFD0]:Artist not mapped to [XMP-tiff]:Artist (embedded).
Warning: [XMP] [ExifIFD]:UserComment not mapped to [XMP-dc]:Description (embedded).
Warning: [Detailed Validation] FileName encoding must be specified [x2]
Warning: [Detailed Validation] Entries in IFD0 are out of order [x4]
Warning: [Detailed Validation] Tag ID 0x0112 Orientation out of sequence in IFD0
Warning: [Detailed Validation] Non-standard count (1) for IFD0 0x0212 YCbCrSubSampling
Warning: [Detailed Validation] [minor] Unknown value for IFD0:YCbCrSubSampling
Warning: [Detailed Validation] Tag ID 0x0132 ModifyDate out of sequence in IFD0
Warning: [Detailed Validation] Tag ID 0x010f Make out of sequence in IFD0
Warning: [Detailed Validation] [minor] Odd offset for IFD0 tag 0x0131 Software
Warning: [Detailed Validation] [minor] Odd offset for IFD0 tag 0x013b Artist
Warning: [Detailed Validation] [minor] Odd offset for IFD0 tag 0x8773 ICC_Profile
Warning: [Detailed Validation] Non-standard format (undef) for IFD0 0x83bb IPTC-NAA
Warning: [Detailed Validation] [minor] Odd offset for IFD0 tag 0x83bb IPTC-NAA
Warning: [Detailed Validation] Tag ID 0x83bb IPTC-NAA out of sequence in IFD0
Warning: [Detailed Validation] [minor] Non-standard IPTC at JPEG-APP1-IFD0-IPTC
Warning: [Detailed Validation] Entries in ExifIFD are out of order [x5]
Warning: [Detailed Validation] Tag ID 0x9101 ComponentsConfiguration out of sequence in ExifIFD
Warning: [Detailed Validation] Tag ID 0x9286 UserComment out of sequence in ExifIFD
Warning: [Detailed Validation] Tag ID 0x9003 DateTimeOriginal out of sequence in ExifIFD
Warning: [Detailed Validation] Tag ID 0x829a ExposureTime out of sequence in ExifIFD
Warning: [Detailed Validation] Tag ID 0x8830 SensitivityType out of sequence in ExifIFD
Warning: [Detailed Validation] [minor] Odd offset for ExifIFD tag 0xa431 SerialNumber
Warning: [Detailed Validation] [minor] Odd offset for ExifIFD tag 0xa435 LensSerialNumber
Warning: [Detailed Validation] [minor] Unknown value for GPS:GPSStatus
Warning: [Detailed Validation] [minor] Unknown value for GPS:GPSMeasureMode
Warning: [Detailed Validation] [minor] IFD0 tag 0x0100 ImageWidth is not allowed in JPEG
Warning: [Detailed Validation] [minor] IFD0 tag 0x0101 ImageHeight is not allowed in JPEG
Warning: [Detailed Validation] [minor] IFD0 tag 0x0212 YCbCrSubSampling is not allowed in JPEG
Warning: [Detailed Validation] [minor] Missing required JPEG IFD0 tag 0x0213 YCbCrPositioning

ExifTool:
[ExifTool] ExifTool Version Number : 13.38
[System] File Name : IM_test_nov4.jpg
[System] Directory : //NFSERVER/originaler/Våre bilder/2023/2023-04/Canon EOS R7
[System] File Size : 8.0 MB
[System] File Modification Date/Time : 2025:11:04 15:08:33+01:00
[System] File Access Date/Time : 2025:11:04 15:14:15+01:00
[System] File Creation Date/Time : 2025:11:04 15:08:32+01:00
[System] File Permissions : -rw-rw-rw-
[File] File Type : JPEG
[File] File Type Extension : jpg
[File] MIME Type : image/jpeg
[JFIF] JFIF Version : 1.01
[JFIF] Resolution Unit : inches
[JFIF] X Resolution : 350
[JFIF] Y Resolution : 350
[ICC-header] Profile CMM Type : Linotronic
[ICC-header] Profile Version : 2.1.0
[ICC-header] Profile Class : Display Device Profile
[ICC-header] Color Space Data : RGB
[ICC-header] Profile Connection Space : XYZ
[ICC-header] Profile Date Time : 1998:02:09 06:49:00
[ICC-header] Profile File Signature : acsp
[ICC-header] Primary Platform : Microsoft Corporation
[ICC-header] CMM Flags : Not Embedded, Independent
[ICC-header] Device Manufacturer : Hewlett-Packard
[ICC-header] Device Model : sRGB
[ICC-header] Device Attributes : Reflective, Glossy, Positive, Color
[ICC-header] Rendering Intent : Perceptual
[ICC-header] Connection Space Illuminant : 0.9642 1 0.82491
[ICC-header] Profile Creator : Hewlett-Packard
[ICC-header] Profile ID : 0
[ICC_Profile] Profile Copyright : Copyright (c) 1998 Hewlett-Packard Company
[ICC_Profile] Profile Description : sRGB IEC61966-2.1
[ICC_Profile] Media White Point : 0.95045 1 1.08905
[ICC_Profile] Media Black Point : 0 0 0
[ICC_Profile] Red Matrix Column : 0.43607 0.22249 0.01392
[ICC_Profile] Green Matrix Column : 0.38515 0.71687 0.09708
[ICC_Profile] Blue Matrix Column : 0.14307 0.06061 0.7141
[ICC_Profile] Device Mfg Desc : IEC http://www.iec.ch
[ICC_Profile] Device Model Desc : IEC 61966-2.1 Default RGB colour space - sRGB
[ICC_Profile] Viewing Cond Desc : Reference Viewing Condition in IEC61966-2.1
[ICC-view] Viewing Cond Illuminant : 19.6445 20.3718 16.8089
[ICC-view] Viewing Cond Surround : 3.92889 4.07439 3.36179
[ICC-view] Viewing Cond Illuminant Type : D50
[ICC_Profile] Luminance : 76.03647 80 87.12462
[ICC-meas] Measurement Observer : CIE 1931
[ICC-meas] Measurement Backing : 0 0 0
[ICC-meas] Measurement Geometry : Unknown
[ICC-meas] Measurement Flare : 0.999%
[ICC-meas] Measurement Illuminant : D65
[ICC_Profile] Technology : Cathode Ray Tube Display
[ICC_Profile] Red Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[ICC_Profile] Green Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[ICC_Profile] Blue Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[File] Exif Byte Order : Little-endian (Intel, II)
[IFD0] Image Width : 3228
[IFD0] Image Height : 2153
[IFD0] X Resolution : 350
[IFD0] Y Resolution : 350
[IFD0] Resolution Unit : inches
[IFD0] Orientation : Horizontal (normal)
[IFD0] Y Cb Cr Sub Sampling : Unknown (1)
[IFD0] Modify Date : 2025:11:04 15:08:33
[IFD0] Make : Canon
[IFD0] Camera Model Name : Canon EOS R7
[IFD0] Software : PaintShop Pro 25,00
[IFD0] Artist : Njal Fisketjon
[IFD0] Copyright : Njal Fisketjon
[ICC-header2] Profile CMM Type : Linotronic
[ICC-header2] Profile Version : 2.1.0
[ICC-header2] Profile Class : Display Device Profile
[ICC-header2] Color Space Data : RGB
[ICC-header2] Profile Connection Space : XYZ
[ICC-header2] Profile Date Time : 1998:02:09 06:49:00
[ICC-header2] Profile File Signature : acsp
[ICC-header2] Primary Platform : Microsoft Corporation
[ICC-header2] CMM Flags : Not Embedded, Independent
[ICC-header2] Device Manufacturer : Hewlett-Packard
[ICC-header2] Device Model : sRGB
[ICC-header2] Device Attributes : Reflective, Glossy, Positive, Color
[ICC-header2] Rendering Intent : Perceptual
[ICC-header2] Connection Space Illuminant : 0.9642 1 0.82491
[ICC-header2] Profile Creator : Hewlett-Packard
[ICC-header2] Profile ID : 0
[ICC_Profile2] Profile Copyright : Copyright (c) 1998 Hewlett-Packard Company
[ICC_Profile2] Profile Description : sRGB IEC61966-2.1
[ICC_Profile2] Media White Point : 0.95045 1 1.08905
[ICC_Profile2] Media Black Point : 0 0 0
[ICC_Profile2] Red Matrix Column : 0.43607 0.22249 0.01392
[ICC_Profile2] Green Matrix Column : 0.38515 0.71687 0.09708
[ICC_Profile2] Blue Matrix Column : 0.14307 0.06061 0.7141
[ICC_Profile2] Device Mfg Desc : IEC http://www.iec.ch
[ICC_Profile2] Device Model Desc : IEC 61966-2.1 Default RGB colour space - sRGB
[ICC_Profile2] Viewing Cond Desc : Reference Viewing Condition in IEC61966-2.1
[ICC-view2] Viewing Cond Illuminant : 19.6445 20.3718 16.8089
[ICC-view2] Viewing Cond Surround : 3.92889 4.07439 3.36179
[ICC-view2] Viewing Cond Illuminant Type : D50
[ICC_Profile2] Luminance : 76.03647 80 87.12462
[ICC-meas2] Measurement Observer : CIE 1931
[ICC-meas2] Measurement Backing : 0 0 0
[ICC-meas2] Measurement Geometry : Unknown
[ICC-meas2] Measurement Flare : 0.999%
[ICC-meas2] Measurement Illuminant : D65
[ICC_Profile2] Technology : Cathode Ray Tube Display
[ICC_Profile2] Red Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[ICC_Profile2] Green Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[ICC_Profile2] Blue Tone Reproduction Curve : (Binary data 2060 bytes, use -b option to extract)
[IPTC2] Date Created : 2023:04:08
[IPTC2] By-line : Njal Fisketjon
[IPTC2] Copyright Notice : Njal Fisketjon
[ExifIFD] Exif Version : 0231
[ExifIFD] Flashpix Version : 0100
[ExifIFD] Color Space : sRGB
[ExifIFD] Components Configuration : Y, Cb, Cr, -
[ExifIFD] Exif Image Width : 3228
[ExifIFD] Exif Image Height : 2153
[ExifIFD] User Comment :
[ExifIFD] Date/Time Original : 2023:04:08 16:00:54
[ExifIFD] Create Date : 2023:04:08 16:00:54
[ExifIFD] Sub Sec Time Original : 10
[ExifIFD] Sub Sec Time Digitized : 10
[ExifIFD] Exposure Time : 1/2000
[ExifIFD] F Number : 5.6
[ExifIFD] Exposure Program : Not Defined
[ExifIFD] ISO : 6400
[ExifIFD] Shutter Speed Value : 1/2048
[ExifIFD] Aperture Value : 5.7
[ExifIFD] Exposure Compensation : +1
[ExifIFD] Metering Mode : Multi-segment
[ExifIFD] Flash : No Flash
[ExifIFD] Focal Length : 85.0 mm
[ExifIFD] Focal Plane X Resolution : 7936.145946
[ExifIFD] Focal Plane Y Resolution : 7931.623932
[ExifIFD] Focal Plane Resolution Unit : inches
[ExifIFD] Custom Rendered : Normal
[ExifIFD] Exposure Mode : Auto
[ExifIFD] White Balance : Auto
[ExifIFD] Scene Capture Type : Standard
[ExifIFD] Sensitivity Type : Recommended Exposure Index
[ExifIFD] Recommended Exposure Index : 6400
[ExifIFD] Owner Name : Njal Fisketjon
[ExifIFD] Serial Number : 033032001880
[ExifIFD] Lens Info : 15-85mm f/0
[ExifIFD] Lens Model : EF-S15-85mm f/3.5-5.6 IS USM
[ExifIFD] Lens Serial Number : 00001101c4
[GPS] GPS Version ID : 2.3.0.0
[GPS] GPS Altitude Ref : Above Sea Level
[GPS] GPS Satellites :
[GPS] GPS Status : Unknown ()
[GPS] GPS Measure Mode : Unknown ()
[IFD1] Compression : JPEG (old-style)
[IFD1] X Resolution : 72
[IFD1] Y Resolution : 72
[IFD1] Resolution Unit : inches
[IFD1] Thumbnail Offset : 7528
[IFD1] Thumbnail Length : 8958
[XMP-x] XMP Toolkit : XMP Core 6.0.0
[XMP-xmp] Rating : 0
[XMP-xmp] Creator Tool : PaintShop Pro 25,00
[XMP-xmp] Modify Date : 2025:11:04 15:08:33+02:00
[XMP-xmp] Create Date : 2023:04:08 16:00:54.00000001+02:00
[XMP-tiff] Make : Canon
[XMP-tiff] Camera Model Name : Canon EOS R7
[XMP-tiff] Orientation : Horizontal (normal)
[XMP-tiff] X Resolution : 350
[XMP-tiff] Y Resolution : 350
[XMP-tiff] Resolution Unit : inches
[XMP-tiff] Y Cb Cr Positioning : Centered
[XMP-tiff] Image Width : 3228
[XMP-tiff] Image Height : 2153
[XMP-dc] Creator : Njal Fisketjon
[XMP-dc] Rights : Njal Fisketjon
[XMP-exif] Exposure Time : 1/2000
[XMP-exif] F Number : 5.6
[XMP-exif] Exposure Program : Not Defined
[XMP-exif] ISO : 6400
[XMP-exif] Exif Version : 0231
[XMP-exif] Date/Time Original : 2023:04:08 16:00:54.00000001+02:00
[XMP-exif] Components Configuration : Y, Cb, Cr, -
[XMP-exif] Shutter Speed Value : 1/2048
[XMP-exif] Aperture Value : 5.7
[XMP-exif] Exposure Compensation : +1
[XMP-exif] Metering Mode : Multi-segment
[XMP-exif] Flash Fired : False
[XMP-exif] Flash Return : No return detection
[XMP-exif] Flash Mode : Unknown
[XMP-exif] Flash Function : False
[XMP-exif] Flash Red Eye Mode : False
[XMP-exif] Focal Length : 85.0 mm
[XMP-exif] User Comment :
[XMP-exif] Flashpix Version : 0100
[XMP-exif] Color Space : sRGB
[XMP-exif] Exif Image Width : 3228
[XMP-exif] Exif Image Height : 2153
[XMP-exif] Focal Plane X Resolution : 7936.14594594595
[XMP-exif] Focal Plane Y Resolution : 7931.62393162393
[XMP-exif] Focal Plane Resolution Unit : inches
[XMP-exif] Custom Rendered : Normal
[XMP-exif] Exposure Mode : Auto
[XMP-exif] White Balance : Auto
[XMP-exif] Scene Capture Type : Standard
[XMP-exif] Lens Specification : 15, 85, 0, 0
[XMP-exif] Lens Model : EF-S15-85mm f/3.5-5.6 IS USM
[XMP-exif] Lens Serial Number : 00001101c4
[XMP-exif] GPS Version ID : 2.3.0.0
[XMP-exif] GPS Altitude Ref : Above Sea Level
[XMP-exif] GPS Satellites :
[XMP-exif] GPS Status : Unknown ()
[XMP-exif] GPS Measure Mode : Unknown ()
[File] Image Width : 3228
[File] Image Height : 2153
[File] Encoding Process : Baseline DCT, Huffman coding
[File] Bits Per Sample : 8
[File] Color Components : 3
[File] Y Cb Cr Sub Sampling : YCbCr4:4:4 (1 1)
[Composite] Aperture : 5.6
[Composite] Image Size : 3228x2153
[Composite] Megapixels : 6.9
[Composite] Scale Factor To 35 mm Equivalent: 3.5
[Composite] Shutter Speed : 1/2000
[Composite] Create Date : 2023:04:08 16:00:54.10
[Composite] Date/Time Original : 2023:04:08 16:00:54.10
[IFD1] Thumbnail Image : (Binary data 8958 bytes, use -b option to extract)
[Composite] Flash : No Flash
[Composite] Circle Of Confusion : 0.009 mm
[Composite] Field Of View : 7.0 deg
[Composite] Focal Length : 85.0 mm (35 mm equivalent: 296.1 mm)
[Composite] Hyperfocal Distance : 149.58 m
[Composite] Light Value : 9.9
[Composite] Lens ID : EF-S15-85mm f/3.5-5.6 IS USM

Mario · November 04, 2025, 04:33:10 PM

So, the file has a ton of metadata problems, including out-of-sync metadata, missing time zones, broken EXIF records, probably corrupted data in IFD0.

Maybe consider a different software that for writing metadata that something from Corel?

Warning: [EXIF] Offset TimeOriginal missing. 'Date Subject Created' may have no time zone offset.
Warning: [EXIF] Offset TimeDigitized missing. 'Create Date' may have no time zone offset.
Warning: [XMP] [ExifIFD]:DateTimeOriginal not mapped to [XMP-photoshop]:DateCreated (embedded).

This may be indicative.

NOTE: Don't post 500 lines of text. This is bad for the search engine and makes your posts hard to read. Maybe just attach the data as a text file next time? That you.

TODO: Before you write back a fresh file, mark "Create Date" and "Date Subject" created in Default Metadata Panel as modified by clicking the pen in front of these tags. Do the timestamps look OK in the Metadata Panel (YYYY-MM-DD HH:MM:SS+hh:mm) format? Do they match what you see in the file?

Does the write-back work afterwards when IMatch explicitly writes the timestamps and syncs them?

Also: Providing a sample of an image file that causes the problems, the XMP file, RAW. JPG etc. would be really helpful for this (upload to your cloud space and post a link).

Also, everything that impacts how IMatch writes and protects metadata (Edit > Preferences > Metadata 1 and Metadata 2 settings, your propagation rule settings etc. The output of the ExifTool output panel after your write back.

We have only very little information to work with.

fisketjon · Reply #7 - Re: Metadata writeback/propagation issue

Quote from: Mario on November 04, 2025, 04:33:10 PMMaybe consider a different software that for writing metadata that something from Corel?

I have never used PSP "for writing metadata", I mostly use it for straightening (the horizon) and for cropping.
Metadata is just something that I never had to worry about until I started using IMatch, except that I have used BreezeBrowser to "adjust image date/time" when I have forgotten to change the DST flag in one of my cameras.

BTW: Corel didn't write Paint Shop Pro in the first place (Robert Volt did), but Corel may still be (and probably is) responsible for many irregularities and errors in the metadata. To most PSP users this may never bother them, unless they use other programs that use the same metadata.

"Do the timestamps look OK in the Metadata Panel (YYYY-MM-DD HH:MM:SS+hh:mm) format? Do they match what you see in the file?"

No, Date Subject Created is 00:00:00 for the jpg saved by PSP, but OK for the jpg created by my camera.
I have no propagation rules set for canon versioning now, I have removed what I described in my initial post.
All metadata preferences settings are at their default values.

http://fisketjon.no/IMatch_nov5th.zip (Note: no https)

- contains copies of the original files from the camera (untouched by IMatch)
- a cropped image made from the jpg using PSP
- relation definition for Canon Versioning - No propagation (I removed those described in my initial post)
- exiftool output for the cropped image before and after writeback