One of the legs of one of our trips was through Seaborne and I got credit for that trip. Our trips were about Nov 1 2017 and March 1 2018 and I got credit for both trips.
The funds have already been credited to my credit card.
I elected to get the "More space" upgrade on the return flight in March and I haven't received the credit for that so I'll give them another call. But that is small in comparison to what I've already received back.