Using the desktop app on Win10. Everything is up-to-date. The SMS app on the phone (Moto X Pure) is Textra. I have a couple of contacts whose conversations are split into two threads, one with their texts and one with mine. The show fine on my phone in Textra but in the desktop app they are split. If I reply to theirs it shows on the screen until they reply back. Then the my text is shifted to the other thread so only their texts show on one thread and mine on the other. They tell me they see the entire conversation in 1 thread. When I say "their" it is each individually not a group conversation.I have checked the contacts list in my phone and on the computer and they each only show up once in the contact list. Any idea how to fix this?