Can users' teams chat (1:1 chat) migration continue even if their OneDrive is in locked state?
Was able to confirm that even after setting 'Lock State' to 'ReadOnly' for the Source OneDrive site, the Teams 1:1 chat migration is still able to work.
The Source OneDrive was locked down using the following:
Set-SPOSite -Identity "<OneDrive personal site>" -LockState ReadOnly
And it was confirmed working as it wouldn't allow sending documents on Team's 1:1 chats.