After upgraded to 1.6.1170 = Anniversary Edition, the former CK is showing errors it is not the relevant version. But can't find the CK for AE here?

As the title of this discussion suggests. This is a cautionary tale on why you should never, ever, ever, ever ever ever EVER delete your creation kit. I just did that and found out the hard way that it actually deletes your entire Skyrim SE folder. All those mods, years and years and years worth of them. I have 2,560 hrs on this game. I have spent years building my modlist and perfecting it once a year. All GONE in an instant. I didn't even notice anything happened until I opened Vortex and it said I went ...

on latest version anniversary edition, just downloaded this app and its not opening - opening from softwares

So, I'm trying to Convert an Existing MOD from LE into SE. It's a Hair MOD, but it uses a Master File of its own creation. For whatever reason however, Creation Kit wont let me 'Save' that Master File on the simple grounds of 'In Use' by the very Software trying to Edit it... Masterful Logic 101... Go Figure. Anyway, unless I can Bypass this strange quirk of the Creation Kit Tool, OR Remove the dependency altogether, I'm not able to fully complete the Conversion Process....

Changelist? Is it save to update, or it will brake my modlist?