strguy11,
I am not sure what would be causing you to get the error but I would be glad to look at your models if you would like to send them to me. You can upload them for me using this link:
https://bentley.sharefile.com/r/r43a47fef4a14dbcb
It sounds as though your models could be out of synch. Did you import the model more than once with the Import As New option checked? I would be glad to look at your models if you would like to send them to me.