I had for some reason thought that was the deal - i.e. Star partner metal miles did not count toward Million Mile MP status. I had always thought it was UA metal only that counted.

Another member has indicated my belief is quite incorrect in another forum, and says all star partner miles count to the tally, and out of interest hope someone here can clarity one way or the other.

I'd be surprised if UA gave someone free SWU's and lifetime 1P Gold for flying exclusively on SQ for instance, but as always I could be wrong.