Hi, welcome to the community.
Search files by a set of fully-qualified file names is a rather unusual task. IMatch has no built-in feature for this.
You can of course find any file by the name using the The Search Bar (https://www.photools.com/help/imatch/#fw_basics.htm?dl=h-32). Make sure to enable the option to search for file names.
Tip: To search the entire database, make sure to select the Database node in the Media & Folders View.
For your specific situation, the
File Finder App offers a solution. One of its modes allows you to copy/paste a list of file names, and it will search the entire database for matches.
To use the app, click on the corresponding icon in the The App Manager (https://www.photools.com/help/imatch/#app_basics.htm?dl=h-5):
and then use the
Bulk Match feature:
Worked perfect. Thanks a lot! :)