This is how I run into this: when I go on vacation, I bookmark hotels I stay at and other points of interest and put them in a list. If I visit the same hotel I did last time, that bookmarked hotel PoI can't be in the 'Vacation 2021' and 'Vacation 2022' list at the same time.

It might also be good to allow the same POI bookmark in multiple lists to have a different names and descriptions as well. For example, a mountain hut could have the description "Stopped here for 10 minutes to take in the view, then continued onward" in one list, while in another list it could say "Enjoyed a nice salad here and had a chat with the owner, then turned back because it was getting late."