Hi, Alvin Wibawa
Having the old conversations in your CSV is reassuring, but it doesn’t confirm that they’ve successfully transferred into the new app. There hasn't been a published completion date or a verified permanent fix for this migration issue.
Here are some suggestions you can try:
Open Copilot in Safari and check whether your older conversations appear there. If they do, use the browser temporarily rather than troubleshooting the iPhone app further. This is an access workaround, not a way to force the transfer.
Since it’s already been over two weeks, it is recommended that you contact Microsoft Support and request an investigation into your account’s chat-history migration. Include your iOS version, Copilot app version, approximate update date, a screenshot of the banner, and whether the browser also has missing chats. Clearly mention that the CSV contains the missing conversations.
Keep that CSV safely stored, and don’t post it publicly or delete your activity history while the issue is being investigated.
Please be advised that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.