After doing a merge, a lot of times you'll see the text in the biography gets doubled. I cleaned up your merges, as an example.
A useful thing to look at is the "Changes" tab on a profile page. If you can click on that, you see a list of changes. If you click on one of those changes, you can see exactly what happened.
If someone makes a change on one of your profiles, it's useful to look at that change. If they've done something wrong, you can fix it.