I recently purchased an iPhone 17 PM for my partner, I used the move to iOS app to transfer her stuff over to the iPhone from a Samsung s24U. All went good except that the text messages we had now show up as a group message with another party that neither of us are aware of. It’s basically me her and a third number in the chat. Issue is now that our chats moving forward are started in a new message thread. Does anyone know what or how this other third number was added to the chat. I vaguely remember something similar about 5 or so years ago when I migrated from Android to iOS and the ten years of text history that I had with one party showed as a group chat message on my iPhone at the time. Again resulting in not being able to continue from the original text message thread. Thanks.