back on evaluation watermark?

Hello all,
I have just upgraded to 10525 build and now the watermark (bottom right of screen) states that i`m back on an evaluation copy. do I ignore this? and is my old win 7 key still valid for future builds?.

regards Topper.

paulsalter said:

That's correct

you are now part of the insider program and are running an evolution version of windows 10 for testing

as long as the official version was activated before upgrading to the preview, then it should remain so if you drop out

Ok thanks thought so just checking.
Topper.