New to Delta as I'm currently on a Platinum challenge. I've been purchasing the North American Day Pass. For my previous flights, when I selected the day pass for my first flight of the day, the web site says that it applies to my other flights. Which is what I would expect for a North American Day Pass. However, tomorrow I'm flying BWI-ATL-AUS, and Delta wants to sell me a Day Pass for each flight instead of one pass applying to all flights. Web glitch? I searched FT but didn't see anything relevant.

TIA