Database | Export | Generate Schema Script does not include object privileges granted to user. These object privileges can be viewed under Schema Browser | Users | Object Grants tab for that user. This issue was has occurred since the upgrade to version 9.1.
In versions 9.0 and above, the object grants included in the generated script are the object grants that are ISSUED BY the user to another user. It does not include the object grants GIVEN TO that user.
To view object grants for a user in versions 9.0 and above, please do one the following:
1. Use Generate Schema Script and instead of selecting the designated user, select the user that has granted the objects privileges to the designated user.
OR
2. Use Schema Browser | Users | Script tab and select the designated user to view all object grants for that user.