Forklifts, it is my bet it actually has some legal or insurance reasoning, something like it needs to be a "_pre_" employment drug screen. if they were paying you, you would then already be in their employment.
And of course BW is "that cheap", since they won't be having any future profits from you, and will now have to clean up all the dirt they thought they had swept under the rug and expose it to the light of day ("a new broom sweeps clean").
My bet is these days (especially with the deal closing postponed) the BW [soon to be former BW] management is spending a good deal of their time finding things that they thought they had 'gotten away from' that have to be fixed or adjusted before the keys to the doors of the palace can be handed over, and that there is no place to hide those problems anymore.