Changing old model editsto work with 4.2.2

[darkriderking]

I found some model edits I would like to use (char reskin), but they do not work because they are old I assume. I ran the program to removed the protection on model edits, downloaded some mpqs, one worked that was already named wow-update=20099.MPQ something like that. I changed the older MPQ to wow-update-20100.MPQ and it did not work so the only thing I can see as the problem is the old .MPQ, so anyway to update it at all?