My "find duplicates" function doesn't seem to be finding duplicates that exist in my tree.

There are duplicates that exist in my people list that aren't showing up in my search.

I have merged other existing trees, I think the problem is tied to this.

The only way I can figure solving the problem would be to merge the duplicate individuals manually.

Is this possible?

I don't want to have to it the other way: save info/pictures etc then erase duplicates then add missing info to the original....ugh.

fyi, I've tried compacting, closing and reloading and it still won't find them...they're still there.

Help?