Yes, they did but it wasn’t too bad since it was a small ratio of rooms that needed to be changed.
It took a few years after BLT opened. Before 2011/2012 there were rooms in Theme Park View below the monorail/skybridge level. Owners were not happy and it wasn’t really a shock that people did not want to take low floors after spending 50% more points than standard. Now TPV starts at Floor 4. Lower than that and the view is obstructed with trees, poles and whatnot included the parking lot being a much larger portion in your field of view than higher floors.
It seems they learned a lesson and applied it to PVB1, then forgot it for PVB2.
PVB1 longhouses do not have TPV category. Instead they were named Lake View and not such a drastic upcharge in points as TPV at VGF or BLT. That way guests aren’t surprised/upset at the 33% shot of getting 1st floor. You basically have to accept that possibility, but they are all a lovely view. The problem at BLT was paying the highest tier of points and then possibly ending up with a view popularly seen as even worse than the mid-tier.
Not sure why they turned around and added the PVB Tower with TPV rooms on 1st floor?