The Brnovich case is separate from Texas.

Brnovich v DNC is stating that the AZ laws shouldn't allow out-of-precinct votes to be counted (ie, those who come from another area to vote in what's technically the wrong polling place), nor should the law permit people to submit multiple ballots on behalf of another.

The AZ attorney general (Brnovich) did reference his own case when submitting an amicus brief for the Texas suit, though.