A little update to this thread.
The issue I had was I needed to migrate/transfer nearly 7000 student's home folders to their MyDrive after we had been hit by Ransomeware and had no way for students to access them until we rebuilt most of what we had lost. Some of these folders were of work that had up to 7 years worth of data included.
After my previous update on the 23 April, Ross contacted me asking to send a meet invitation.
Whilst I sat at home connected via Meet with Ross, he talked me through what was required also explaining to me what was happening during each part of the process.
I had RCLONED these folders to MyDrive from a Network share, this process started on the 30th April and finished earlier this week. This meant that luckily the folders and documents were relativley clean from a permissions point of view.
Ross was online with me for around an hour whilst we waited for the first transfer to complete. Thanks to Brian's help earlier, I had a gsheet with the folder id and the folder name which was the same as the username portion of the email address, so a quick concatenate filled in the rest and I had the data needed to continue.
The command that was run was:
gam user ian.bevan transfer drive <foldername> select <folder id> targetfolderid root targetuserfoldername "" mergewithtarget retainrole none preview
Today, just about 10 minutes ago, the task finally completed and I would like to thank Ross for his help.
If Ross says, send me an invite, do it. Ross is not only super helpful with the problem at hand, but as he talks his way through it, you learn as well.
Ross, I am most grateful for your support which has helped our students in turn also.