DigitalVolcano Software Support

At the simplest level you can run a scan (Exact matches or Image Mode Similar matches), Mark 'Only one file in each group', and then copy all the marked photos to your new folder (making sure Overwrite is turned off).

You can add the folder name/wildcard to the Exclude box (under the file filter). Use a semicolon to separate names,.

Side by side projects:-

As promised - a few screenshots from the Alpha:

Does using the virtual drives/folders feature help? This allows you to make an image of a drive for offline comparison.
https://www.digitalvolcano.co.uk/duplic ... =&sct=MzQ2

It usually checks by volume drive serial number among other things - is it possible that one drive was cloned from the other at some point in the past?

If you are happy you can ignore the warning (be sure you have backups before removing anything though).

You can try:
Selection Assistant
-All but one matching SET in each group
-(Checkmark) File name - Does not contain - . (dot)

This should work for .NET regular expressions though I've not tested it in DC

https://regex101.com/r/MAJQSZ/1

Next to the replace button. (Pro version only)

See manual "Action buttons" section
https://www.digitalvolcano.co.uk/textcr ... =&sct=MA==

You can use the Extract button to put the lines to the ScratchPad, then this can be saved.

To get line breaks in the extracted text, you may need to change your expression to one such as : "MOZ_.*\n"