Servos have gone in reverse of their original settings since last flight
I prepared a plane today for flight (flown last about a month ago) with a spectrum ar400 receiver and a mixture of servos. The transmitter is a DX6I. When I did the preflight check I found that all five servos were operating in reverse of the original setting that was saved in the DX6i. The receiver has not been moved to or from another plane. What could cause the servo reversal?