Hi @yummiweb
This is a correct, working solution.
AD was there long before NS7 or NS8, and is still there. Samba and whatever still have to respect Windows definitions for AD, and this is one of them.
The difference in handling between NS7 and NS8 is probably due to the fact that the NS7 AD was a container / jail, but still “integrated” with AD (and probably mail too!). A Migration takes these settings over to NS8.
However, a new NS8 AD will not have these yet, so “rolling back the sleeves” as in “manual work” is the motto of the day.
RSAT and a XL sheet or whatever list to tick off done is your friend!
My 2 cents
Andy