When I first set up the phone and used Backup Assistant, I had two copies of my contacts, which were of course linked to one another.
After unlinking and removing the duplicates, I receive a SMS... it wasn't associated to a prior discussion.
(Texted my wife in the prior thread, reply came in another.)
I blame the unlinked contact, but I was wondering is there a limit of messages a thread can handle? Trying to deduct my reasoning.