When deleting an article from your library, it doesn't subsequently delete all its highlights.
I think it would be useful when deleting a [card with associated highlights] for there to be that option, e.g. "Do you wish to delete all its highlights too?"
When first exploring Sublime, I went through and deleted a bunch of articles I had added in the Startupy era that no longer feel personally relevant. I just now now realized that to clean up-| suppose it would be my miscellaneous collection of un-tagged highlights-I'll have to go through and delete all those one by one too.
– From Stuart