Sadly, UA is determined to shoot itself in the foot here. Since the OP is a TG *G member, he/she can't tie E+ access to a non-UA account. So, without obnoxious FF# switches back and forth on each leg at the gate, this isn't even possible. While there are some brave souls out there who will do this, it isn't feasible to vast majority of the people who might be affected by it. (I'm pretty savvy of such things, and I can tell you that I wouldn't deal with that hassle!) And of course, even full Y tickets won't make a difference.

Partner *A folks should be a great source of revenue for UA w/ E+ Access, but they'd rather punish them and not take their money. At the very least, there should have been a seamless way to make this work when the E+ access was removed.