I am a new EXP ( just made EXP Oct 2017). As a result, I was not aware of all of the tricks of redeeming SWU's. I booked an open jaw trip DFW-HKG and NRT-DFW to correspond to dates of a cruise in March. I requested SWU's for myself and spouse(also EXP Oct 2017). The DFW-HKG is on AA125 on 03/17/18 (Saturday departure)--since learned that is a difficult SWU. Been on the Upgrade list for months, still C0. The good news is that the NRT-DFW leg cleared in December. After this experience, I look for flights with C or A availability so the SWU's can clear at booking. I know that this is not always feasible for many trips.
I am still hoping that the AA125 SWU will clear, however, I know that DFW has a lot of AA EXP's.^