The best method to migrate 1:1 chat history between Microsoft 365 tenants is to use a structured Tenant-to-Tenant (T2T) approach that includes user identity mapping, secure chat extraction, attachment preservation, and incremental sync before cutover. Since Teams chats are stored within Microsoft Teams and backed by Exchange Online, native options are limited for full chat recreation.

CloudBik provides a secure and reliable solution to migrate Teams 1:1 chats with preserved history, attachments, and minimal downtime ensuring smooth collaboration after tenant consolidation.

Learn more:- https://www.cloudbik.com/solutions/microsoft-teams-migration/