Booshman said:
I’m sure there is nothing in the ABC cut that is missing from the RIC though

Ah, I see. I wondered if all the ABC footage was available at the time the RIC was made.

For the widescreen version I don’t want to have to just letterbox the footage. It will look bad and I think I can get better results combining footage to create some new shots.

Understood!

…my pan and scan work is all complete at the size it is now, I don’t want to have to go back though it. Do you think it worth downscaling the video externally so it’s not down to Premiere to do it?

It probably won’t make much difference.