That (ret-conning) could apply to any X-character...at anytime, and not just Polaris.
There's always the possibility of having some things being retconned by any writer coming on board for a re-launch. That's practically a given. And unfortunately, That's the inherent nature of this beloved hobby of ours.
I've learned to just roll with it and hope for the best.
And, if it comes to the worst...we still have our Claremont run to turn to for solace.