Just hit the 3 month Feb-April GS PQD challenge spend (15k) yesterday! Well actually I also completed the required spend in the Jan-Mar 3 month period, but chose not to tempt IT-shenanigans which might have occurred changing my chosen challenge travel window at the end of March...
Sure enough, only a few short hours after my flight, on Saturday afternoon, challenge processing completed and am now back at GS
Here's to another fun year and thanks to UA for extending the challenge!