Export/Import of XMLApplication

I have 2 Rollbase accounts (Public). Exporting XML from one (DEV)  to create an identical test (TEST) environment seems to provide a number of discrepancies

Note - I update the application without deleting the current version of it in the Test environment.

1. Dashboard layout is not rendered correctly from the DEV to TEST - the charts are laid out very differently

2. The list view defaults back to a grid option (even though the grid button is not enabled)

3. Random records are left in the application file - some are deleted some are retained. There is only one seed record configured for this file so we should only see one record

4. Some files retain their data - some lose it - should all data be wiped - and then only seed records be populated - OR - doe the install add data to the existing records in an environment?

Thanks