'Polit'...what's the explaiation?

Anyone that bought the first set DVD or was a fan of the series knows that the "Pilot" (also the title of the first show) makes absolutely no sense what so ever unless the second part of it comes later (I've only watched most of the first disc). I'm of course reffering to landlord Calloway dying and leaving the apartment to Rose (and right after that Mary's "surprise" backfires with Rose having to pay for repairs in order to own the building). But then Calloway is back (although off camera again) in the very funny episode four "The Refriderator". So was the pilot just something they tried out and didn't like? I know that they do things in the pilot and change them as the series goes on but they seemed to have changed what could have been a major part of the series. If this has been posted here, I apologize.