Carmel, you can restore the information on the anonymized profiles. Click on the Changes tab and browse the changes. When you get to the place where you removed information, you can use "Restore" to get the profile back in its first state. Or you can note down the information and re-enter it in the profile.
When this is done, search for matches. This should point you to duplicates. When you find clear duplicates, propose a merge.
This is a bit more complicated than just merging into another profile, but this will ensure that the merged profiles were always intended to represent the same profile.
I'm aware this all sounds quite challenging. But it is harder to explain than to do.