Price Adjustment not working

We have a price adjustment set up for returns that is a copy of the default customer adjustment with a line added to deduct 30% from the price. It is set for all customers and all parts.

The adjustment and schedule have not changed since 2013 and the effective dates are 2013 to 2040.

A user entered a credit for a return and put in the appropriate adjustment schedule on the order line. For some reason it did not pick up the 30% deduct adjustment.

Is there something else that might cause it to exclude a part or customer?

I can open a ticket but wondering if anyone has seen something like this before.