Can you keep an emunand in B9S: Yes.
Can you transfer emunand to sysnand and keep everything: Yes.
The easy way to go from Emu -> Sys is to make an emunand backup and restore it over sysnand.
Again, I want to keep my emunand and sysnand separate. I don't need to be pressured into doing the opposite.
It's a painless process that only takes a few minutes. You can keep the same setup, emuNAND and all, just with updated software
Thanks for telling me what I want to know.. I guess that's a project for tomorrow and hopefully I don't mess it up somehow. I really try not to touch this stuff unless I need to.