I took Jef's advise and it seems I was finally able to obtain the "paperless copy" of the vehicles PDI from dealer. Turns out my boss has a contact who has a close friend working in a VW dealer a few states away. He sent a screenshot of the document highlighting the J527 p/n!!!! Also it's the same p/n Dana located in the ross archives "Tiguan w Trailer" main difference being w-Kessy.
So it appears the J527 on this particular build should be 5K0-953-569-AJ
To recap previous modules fitted by shop in order: AL BC AS AK
According to report vehicle should accept AJ
Bottom line is a proper pre scan along with retaining old module would have prevented this whole mess!
Also this VW parts dept really sucks at shooting darts
I should have the part later this week and once installed and configured I will update thread.
Thanks All!