>But, once merged, the data is irreversible.
You might want to clarify that you choose not to reverse the merge, not that it's technically impossible. If you have any backup of your database prior to the merge, undoing the merge would be simple.
Regards. Al
"Violence is the last refuge of the incompetent." -- Isaac Asimov
"Never let your sense of morals prevent you from doing what is right." -- Isaac Asimov
Neither a despot, nor a doormat, be
Every app wants to be a database app when it grows up