Well I'm not saying it's true or that I believe them, but having never been exposed to any of the supplementary materials that I listed above I thought it's likely there's some thing out there to give a bunch of people this false memory.

Like the fact people swear they saw the Biggs and Luke Yavin reunion back in cinemas in '77 but that footage was featured in a television special wasn't it? I thought this could be something similar and someone could point me to a specific example.

I find it such an odd and interesting phenomenon.