Time machine sees MCH as new device

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1

Hello,

So, I used MCH to backup my mac using Time Machine for the first time. It all went well. But now that it was the time to do another back up, Time Machine saw my MCH with a new name, and therefore I had to make a new back up from scratch. What is going on?

EDIT: The new back up says it’s 1.98GB so I suppose it saw the last one, even if Time Machine thought it was a different drive

2

Was the old name MyCloud-99999 ??

3

It was MyCloud-FFFFF. Today TM backed up again, with no problem though