Default Payment Term based on Order DFF

Hi,

We're trying to default the Payment Term on the Order based on a DFF which we use.

For example, Customer "ABC" needs to have payment term "3% 10/Net 30" when DFF is "XXX" and payment term "Net 30" when DFF is "YYY". Their default payment term is "XXX" as this is most used.

We did try to use Pricing Manager > Modifier > Promotion Terms. We tried this in 2 ways - one having the Customer Qualifier at line level and the second having it at header level.

We are able to see the DFF as a qualifier, so Modifier setup looks valid, but this doesn't work when booking order.