1.0 used the walls from the SE version. In fact, most of the background in 1.0 is from the SE - only the soldiers on the ends came from the original painting. I can't remember if it was because Harmy missed it, because he thought the low resolution of the GOUT made it stick out really badly from the '04 footage, or because he didn't like how fake the painting looked.

Someone who had seen an original print on the big screen (possibly mverta) said that even in the original prints, the original matte painting looked pretty fake if you actually focused on it. Cinemagoers in '77 would have been focused on the heroes, and thus on the live footage in the center.

WP2.3 looks like it uses a lot more of the GOUT image - if there is any '04/'11 footage in there, it looks like Harmy reduced the quality to make it blend better with the GOUT stuff. Seems like a good compromise.