Interesting! The most obvious example for me is relationships ending - if it ends badly then one's memories of the happy times often get corrupted, so you get very contradictory emotions: you can be aware that as lived experience X event was wonderful, but when you remember it it's overlaid with the pain of later events, so you get both sensations at once. Same after a bereavement, I presume.

I wouldn't go on a holiday if my memories of it were going to be erased afterwards. Maybe I put too much emphasis on memories.