Document Owner is is not updated after renaming Gdrive shared drives.
CASB 3.181 addresses this for all new drive renames after the 3.181 release. Moving forward when a drive is renamed the Gdrive Securlet will see the change and will update the document owner. Existing drives will not be addressed as the rename has already taken place.
Previously the teamDriveID can be used to trace files because the id remains the same.