Can't remove photos that are not duplicates from duplicate album

One way to remove a pair of duplicates from the Duplicates album is to edit one of the photos slighly. This will cause a new scan for duplicates for this image, and it will be gone from the duplicates.

I am also finding this frustrating. I have pictures that look much the same to Photos, but they are different for me and I want to keep them. As far as I can tell, there's no solution. I have left feedback for Apple requesting a way to address this, and you could, too, at:

Feedback - Photos - Apple

I also have some cases where there are 3 pictures that look alike, and I'd like to merge 2 of them (not the 3rd). At least I can to do this manually...

Please send feedback to Apple, as Richard suggested. Perhaps the developers will add this in a future version.

I added the fix as a user tip, so we can easier refer to it: How to remove suggested Duplicates from t… - Apple Community

That works! I added 3 points (whatever that means) of warmth, and the pictures disappeared from the Duplicates folder--even though the pictures are actually different, being taken a fraction a second apart, or being different resolutions. A good-enough workaround.I wonder if it will last though the next scan....

Thanks for the idea!

I increased warmth by 1 (pretty much un-detectable) and copied the edit. I was then able to paste the edit onto many others at once by command clicking one in each pair. Pretty quick.

I had a group of three duplicates-- 2 of them should be merged, but the other should be kept. I pasted the edit onto that one and it disappeared leaving me the other two to merge. Cool.

Well, those duplicates that I changed slightly so they would be different-- they've shown up again in the duplicates list. I'm sad.

It did not last: the devil howling "Ho!...!" restored the status quo.

Regards to J. C. Squire

Thanks for the confirmation, Richard. I used the selective colour tool to make a few pixel s more saturated, and the duplicate pair vanished.