I thought that in Oblivion when you had, for example, a grand soul gem with a common soul in it, and you then killed something with a higher level soul(grand), that the grand gem's soul would be replaced. This is currently not the case and I didn't realize it until wasting 4 grand soul gems with petty-common souls. Very disappointing. I'm sure it's going to be an early release mod once the CS is out, but I just wanted to put the request up in case noone was going to do it.

I suppose I shouldn't have posted this at 2am and hoped for responses...

that isn't the way it worked in oblivion, a mod, http://www.gamesas.com/index.php?/topic/1129945-relz-soulgem-magic did what you want. it won't be possible til the CK comes out since we can't script without it.

I'd be happy with souls only going into there specific gem. So a petty soul only into petty gem and not in anything bigger.