Yep, 107.9 was the "leave-behind". We made that deal with the FCC in the application to move 97.7 out. At the time, KXXO was very upset about the prospect of a new signal, calling Oakville "a spot in the road" and other such nonsense.
I'm still waiting on my app to move KANY to the same site as KDDS and KOMO-FM. It's amazing how slowly the commission can move when there are more than 2 moving parts.