Currently the DA MCL has a non-unique price. The addition of the intertie ID/ flowgate ID attribute will allow for a unique price for settlement if a node has a different price for an associated contract for DA Energy. This change is in Charge Code 6011 Day Ahead Energy, Congestion, Loss Settlement v5.6.
The effective date of the changes is 5/1/2021 and the anticipated implementation date is 4/28/2021, this is a prospective Settlements config change.