Got off the phone with Delta a little while ago about an equipment change and a downgrade feom premier to economy on one of my return flights on my upcoming trip BWI TO HUX due to equipment and schedule change

the new receipt shows the Delta codeshares operated by Aeromexico as arpt on the status on the receipt. While all the other delta flights show an open status. Any cause for concern because the last time I had a schedule change they were all on the receipt as open?

Or does that ARPT status just there so I have to check in at the skypriority lane at the terminal to receive boarding passes?