How To Exclude A Folder From Auto-Check Or How To Set A “Source” Folder
The auto-check feature in the duplicate file finder tools automatically selects all except one duplicate file in each group for move/delete. The feature selects the files based on the defined settings like the oldest/newest, largest/smallest files, ones with lower resolutions for images or lower quality for audio files and so on, but sometimes it is necessary to preserve the files in certain “source” folders and exclude them from the selection. That is quite easy by ticking a check-box in front of the folder name in the folders list.
In the folders list tick the ‘Disable Automark For This Folder’ checkbox for the corresponding folder.
A related article can be found here: Compare Folders For Duplicates – How To Compare “Source” And “Target” Folders