Let's hope you were told wrong, otherwise all of the replaced units will need yet another replacement, and ongoing production vehicles may need replacements as well.
We had a lineman die last year trying to help out following a storm because he thought a line was dead when it wasn't. This didn't have anything to do with back-feeding, but shows that lineman make mistakes. I wouldn't want to be responsible for killing one who forgot to check to see if there...
I just got an invitation; RN1143...
Don't know if it matters, but this reservation was my second one and it was for a tri-motor. My earlier reservation, for a dual-motor, has not received an invite.