Ok, then we have a completely different approach. For me, disk space is cheap (relatively speaking…) which means that I tend to keep raw files around whenever a picture is worth developing. One reason for this is that screen sizes keep increasing, tools keep improving and my knowledge about how to use them keeps increasing. And my ideas about how a picture should look change as well.
That means that I want to be able to revisit an older image and re-do the editing. That’s impossible without the raw file…
Wrt. not being able to remove film rolls from “collect images”: that doesn’t work for me either. However, I can remove folders from the database through the “collect images” tab (i.e. switch to ‘folders’ mode, select the folder you want to remove and right click.). Afaik, that removes the images from the data base, but leaves the xmp files in place