I am trying to Migrate team's Channel Messages.
I am able to read/get channel messages using graph API(v1.0) but how I can write/import it without using Beta API?
I was also trying same using Exchange service to read Hidden folder(Conversation History\Team Chat) where teams chat is stored,
But using Exchange I am unable to find any item in folder call Team Chat.
Is there any way to migrate channel message without using Beta API?
Thanks in advance!