Payment Term is Getting override from Sales order

Hi Team,

I have observed Payment term is getting override even if we have override terms checkbox unchecked.

We have customer Enable for BFB customer account profile level. With bill level value is 'Site' but override payment terms checkbox is not checked.

Customer account level:

Site Profile level:

Presently when sale order created with BFB enable payment term, AR invoice is getting created with BFB payment term only and not with customer default payment term i.e. NET90 which is not enable for BFB.

So unable to understand how this override is allowed, we were expecting payment term as 'NET90' only.