I find the website to be clear, you must fully qualify for 1K to earn additional RPU for 25k PQM:
Premier members will earn two Regional Premier Upgrades upon meeting all qualification requirements of Premier Platinum status, plus two more upon meeting all qualification requirements of Premier 1KŪ status. An additional two Regional Premier Upgrades will be awarded for each 25,000 Premier qualifying miles or 30 Premier qualifying segments earned thereafter during the same calendar year that Premier 1K was reached.