Hi everyone — here’s some clarity on our legal compliance.
As of now, Chat history for a Team is stored infinitely and available for eDiscovery/Content Search. So, the answer to your question depends on what you mean by closing the project. If you close the project, but don’t kill the Office 365 Group/Team associated with, everything should be still searchable. You should be able to recall/search for all chat activity that happened within the Team by scoping your compliance content search to the appropriate group mailboxes. The data is not lost.
Please let me know if you have any other questions! You can post a message here or tweet me @skprufo.
This item is still under review. No new updates at this time.