David can you be a little more specific on the "missing fields item" ?
The macro relationshipo when importing is any macro signatures may and most likely will become invalid when you import them from one site to another, as the signature is based on the Macro Signature Key which often changes between instances. When these macros can't resolve you get weird UI issues in the admin interface.
So did you do the macro reset? It was only one test to see if that was the issue, there may be other issues.
Also are the two instances the same Kentico version and hotfix?