Having been a plank jockey 18 years before taking up rotary training, I was keenly aware of handling differences, for instance, pushing forward in the heli could mean a bad day. I had been reading all the well-known authors, thought I understood heli flight reasonable well, and had the discipline not to do pushovers. I don't consider myself exceptional.
Airplane flying didn't confuse my rotor training at all. But, I once rolled the throttle the wrong way due to motorcycle experience.
Came very close to an overspeed, but that taught me, and I didn't repeat it. Ingrained reactions can be the wrong move, so counter by keeping your head in the game, and don't stop thinking about what you are doing.