This is why i don't do adjustments unless there is no secondary to file. The receive the EOB and will pay what is required.
I'm still confused. Your contractual adjustment is the contractual adjustment. For example if I bill Aetna $100 and the fee schedule is $80, $20 is the contractual obligation and should be entered at the time the payment of the primary is posted. Going back to do contractual adjustments seems counter productive.