In the Single Object Compare window some buttons are disabled. (“Copy to Left” and “Copy to Right” , “Open Files”, “Delete left text” and “Delete right text”)
As a result, it's not possible to merge scripts with Toad.
WORKAROUND:
Get the script for the objects from the Schema Browser, save them to files, then compare the files. Then you can copy right or left
STATUS:
Waiting for fix in a future release of Toad for Oracle
