I didn't mean to insult you or something.....
I thought you meant something else with the saving the files (Now when I read your post again, I understand that you meant save and then load, which will make the -u items to be deleted). Anyway, it is not possible since I don't know what I'm going to delete.
FiberOPtics has wrote a point why your new idea can't work, but it is still a nice idea (even though I'm not sure that it will work with huge hash table due to the 64KB ini file limit).
Thank you Rand.