Luggage dosent follow through to other dimensions and upon return to overworld, the luggage is lost

"Not following" - it has always done that, since it uses fairly unmodified dog/cat AI. So this is more or less feature requests.

"Lost" - can't reproduce. What could have happened is that it might've hit portal while trying to get to you and teleported to nether. Can you re-check?

Yeah i thought about the portal thing an went back, but it was still very much MIA

Have you tried moving away from portal? It should teleport (as I said, dog/cat AI).

wolves don't follow..at least they didn't last I tried when trying to add this functionality to my Frienderman..I'll be working on this shortly myself as it's a feature I've always wanted implemented