I don't use any of the online tree services. My tree lives on my computer in my fully-featured genealogy program. I control it. If I screw it up, it's my fault. From time to time, I generate a new tree and upload it where I need to upload it.
I don't know about the which databases and records My Heritage holds, so I can't speak to that. I think a couple of people here may subscribe.
Bill you need to contact Herb Silva, one of your DNA Family Finder matches on FTDNA. You match his mom and if you work together, you can probably figure out the connection. Well, you match more than his mom. You are matching a lot of family members that Herb has tested.