Just copied my app from DEV to LIVE, and copied my database from DEV to LIVE. All appears to transfer correctly, no error messages or unusual behaviour.
After the move, the Databases are not the same and the LIVE app does not function correctly. DEV data is fine, DEV app works as expected.
Were there entries (such as Users) that were not copied from DEV to Live?
Can you please provide more details as of what happens in the live app differently from the dev version?