I enabled Messages in iCloud recently for one sole reason: To have my message threads synchronized across my devices, and so that if I delete a message thread on my phone it gets deleted everywhere. However, this doesn't seem to be working. I receive automated text message alerts through work when systems need attention, and I still have to delete the threads manually on every device. I'm getting close to turning off iCloud Messages since this was the ONLY reason I even wanted the feature. Is there something I'm missing? Messages actually says "This will be deleted on all devices" but it only deletes on the one device.