Just spitballing for how to convey C-3PO regaining his prequel memories without then also implying that he’s lost his OT and ST ones:
Keep the scene mostly as is (comedy smash cut and all) but on the “Have you heard? I am going with…” line, have 3PO ‘glitch’ and quickly cycle through a few of his significant previous owner’s names before landing back normally on “Mistress Rey on her very first mission”.
Or at least a structure somewhat similar to this… the main idea being that 3PO’s ownership history database is updating itself in real-time during this moment.
The additional audio could be tweaked to sound somewhere in-between the warbled “memory restoration complete” line and the earlier deep voiced sith translation. Perhaps even wildly fluctuating in speed and pitch with some subtle distortion etc?
It would also act as a partial callback to 3PO’s mistrust of R2’s “famously unreliable” memory banks, as we can infer from the glitching that the data hasn’t been properly looked after by R2 over the years and has thus become slightly corrupted, possibly requiring some further tweaking later on off-screen?
Not sure how feasible this idea would actually be in practice though, there might not be enough time to squeeze anything else in if the line(s) were to stay mostly intact… But with all of the talent on this website, thought I would at least throw over my (possibly silly) idea!
Okay - that’s all from me. Back to lurking and being in awe of you edit wizards!