As we will see, one of the most common reasons for new or updated paintings was the change of the “pirate ship” (a.k.a. the Millennium Falcon) from Colin Cantwell’s original design (that would become the Blockade Runner).
In the case of the pirate ship in Docking Bay 94, where so much re-painting was required to replace the ship, I asked Ralph why he didn’t just create a new painting. He explained that he was so pleased with how the figures in the foreground had turned out, particularly R2-D2, that he didn’t want to spoil them by attempting to recreate them a second time!