If you are asking about the eligibility to earn the bonus Qantas points, Below is from the T & C on the website
“Please note that the bonus Qantas Points will not be awarded if you are currently a primary cardholder of another Qantas Premier Everyday, Qantas Premier Platinum or Qantas Premier Titanium credit card, or have closed, or qualified for bonus Qantas Points on any of those Qantas Premier credit cards within the last 12 months.”
The Westpac Black Altitude Mastercard will not come in your way from earning bonus points on the Qantas Premier Platinum card.