Here's another theory:

'85 IP had been retired by '92

Older IP, which had been discovered in 'special vault' in LA (see Post 38),
was used to make '92 wide VHS, Technidisc LD, and eventually GOUT.
That one contains the "old friends" the two burn marks in Tantive corridor.

'85 IP (JSC & early SWE pressing) don't have the burn marks (so O-neg probably doesn't.)
Burn marks return in '92. [They're not new -- Puggo's pre-ANH transfers already have them.]
'92 VHS, Technidisc LD have them. DC, THX, GOUT have artefacts in their place.

Besides the "old friends" we've also seen different tape/splice/glue marks between the two IP's.
Showed pics in the "smear-free '93" thread.

All of it suggests (I'm not claiming proof) that '85 IP wasn't used for GOUT.