Thunderhead

Nice. Glad to hear it, sorry I wasn't more help there.

Is this the only docker your having issues with or is this just an example?

Yes. Twice now.

You followed the steps as you should have for a clean transfer. I'm not sure why it failed for you. Here is what I would try first; Connecting the 2tb drive via USB if possible as it is likely easier than reinstalling it. Mount the drive in unRAID and see if there are any left over files stuck there. If you find your docker files still there I'd attempt to COPY (not move) them over to the new Cache Drives and see if that resolves your issue. If that doesn't work I'd try then reinstalling the 2tb Cache Drive and see if your docker settings return correctly.

I followed the instructions from https://docs.unraid.net/unraid-os/manual/changing-the-flash-device/#:~:text=Install Unraid to a new,on the Tools > Registration page. and I get an Error when I attempt to 'Replace Key' Here is the Error; Error: {"message":"Request failed with status code 403","data":{"error":"KeyFile is not registered with Lime Technology - please contact support and provide your Keyfile."}} I've contacted support but after I did it said I should post in the Forum to... "Receive Help Faster". So here I am, despite me thinking that I will have to wait for support either way.