Deleted Duplicates Keep Getting Backed Up

I believe duplicates from my iCloud keep getting backed up to Immich, which leads me to having to remove them, once again.
Additionally, in the back up menu, the Backup category (Backed up photos and videos) has more photos than the Total category (All unique photos and videos from seletected albums), leading me further to believe the difference are the duplicates.

I only backup one library.