We have seen examples where database schema customisations haven't been brought across with the transport.
You can check if this is the scenario in ObjectBrowser.
If you see the custom fields of a table when looking at the database view, it means the definitions for our object layer, i.e. DialogColumn entries, have been brought across.
However, if you now open a SQL window, and run a select * all statement. Are the fields displayed? If not it means that the actual changes have not been brought across into the database.
Do another transport. This time select to export all schema extensions. Once imported into your new environment all should be ok.