Gee thanks, You're so cool in your WDW knowledge ~ I wish I knew as much as you do...It’s something I’ve never found an answer to. I do know when the later “GE” corridor was built in 1986 it was built inside of the mural wall, not as a replacement. The mural wall could have remained behind the light show corridor.
I remember seeing the pins - somewhere - I comes flooding back and remember seeing the horizons muela there...Cue the "WaltDisneyWorld History" mural wall pin series, with a chunk of the mural embedded in each pin.
Bonus: Buy the whole series and you can re-create the mural in the warehouse of your choice.
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