I have an iPhone X running iOS 14.2. Today, for no known reason 3 people I have an ongoing history of messaging, all on iPhones also, had their entire threads disappear. When I went to message one of them today, it was as though we'd never messaged before. I found two others the same way. 2 of those people I had already messaged several times earlier today.
Now, no existing thread. Strange thing is that on both of my Macs at home and my Apple Watch 5, those threads still exist. I can scroll back on past messages- but not on my phone. All are synced. Anyone have any idea what's going on or how I can restore those past messages?