What happens if you upgrade to win10 again?

Question

Windows

I purchased a computer with a key (in the form of a sticker) for Win7.
Updated it to win 10 via MediaCreationTool .
Later I got a second computer. I downloaded of. win7 image, put it on the second computer and activated it using the same key from the sticker from the first computer.
The second computer with the seven successfully passed verification and is still working.
Now I'm interested in the question: What will happen if the second computer is also updated to win10 using MediaCreationTool ?
(I asked them after reading this article)
There are fears - suddenly the license will fly off the first computer?
Is such a 'transfer' possible?
After all, when upgrading from 7 to 10, the product key changes - can it be that both machines will have the same key?

Answer 1

If I'm not mistaken, then after the paragraph

I downloaded of. win7 image, put it on the second computer and activated it using the same key from the sticker from the first computer.

you have already lost the license, but not the activation. Perhaps you are confusing the two concepts of license and activation. These are different things, although related.
With the same success, you can activate the system using various utilities. But that doesn't make it licensed.