My ZfD 4 has been replaced with ZfD 7. All the necessary Zen objects have
been created and configured to the best of my knowledge. Unfortunately
when Inventory server starts, database Policy is not configured error
occurs in C1>inventory Service Server status. When I query the inventory
database, the database is empty error pops up.

i have already shutdown the ZfD 4 services on the old server though some
old zen objects are still in the tree but not associated with any object.

Please advise !