Originally Posted by
jdrtravel
I thought DL would not touch a ticket like this without charging a fee to take over the ticket? Or does that not apply when there is a schedule change or IRROPS?
With a schedule change rebooking is the responsibility of the ticketing party. I can imagine some carriers demanding same inventory class, not just same cabin. That's between Seabourn and Delta for the OP.
In IROPs, carriers will handle it.