For what situation this applies? It never cost me a rearm count when integrating updates in 10, normally it's done offline with dism. I also don't activate windows in \audit mode.
This applies to sysprep (online) integration of updates and apps. You're referring to offline integration of updates. It CERTAINLY can be done, but the "official way" is online integration of updates (check the latest MSDN ISOs). This method will not help if you need to activate Windows in Audit mode, it just restores the original WPA for your reference images.
Is the WPA (windows product activation) used when i go into \audit mode? Not afaik, so why does it need te be reset? I'm trying to get the why.
By default, an untouched original MSDN ISO offers 1001 rearms Are these rearms good for 30 days each? So 30 days x 1001 82 years? And we need to extend that more?