Microsoft Teams Tenant-to-Tenant Migration – Chat & Channel History Challenges

[grocesy]

After a Microsoft Teams tenant-to-tenant migration, we’re validating 1:1 chats, group chats, and channel conversations in the target tenant. Key challenges include chat history completeness, user identity remapping, and meeting continuity.


At CloudBik, we follow a structured Teams T2T migration approach, but I’d value community input:

• Best practices to ensure chat and channel history integrity?
• Any checks you run post-migration to validate Teams conversations and permissions?

Appreciate insights from anyone who’s handled Teams chat migrations at scale.

 

[mrsimon007]

In large-scale Microsoft Teams tenant-to-tenant migrations, we’ve found that validating chat integrity starts with pre-migration identity mapping and post-migration sampling of 1:1, group, and channel conversations against source exports. We also verify meeting links, calendar objects, and channel permissions using automated PowerShell and Power Automate flows. At i3solutions.com, our Microsoft consultants—working as a U.S.-based Power Automate development partner for regulated industries—apply these checks regularly for enterprise and government environments where compliance, auditability, and data accuracy are critical.