Meh, I don't get it. Why would anyone ever want to convert any oblivion or morrowind original content to Skyrim? Practically everything in these two games has been re-done and massively improved by modders. If you're going to convert anything, convert the meshes, textures and stuff made by modders. It's much higher quality and is likely to fit in better with Skyrim's level of detail, and since it's original content made by modders, it's their permission you need to ask, not Bethesda's - and the guys in the modding community usually keep their lawyers on leash too. OTOH conversion won't be *that* straightforward, you've got some Skyrim quirks like object space normal maps to deal with, and it gets harder when you get into armor, bodies or hairs.