The new game lets you start immediately before being kidnapped to the sex world. (Just need to press ctrl a few seconds to skip the dialogue, I think). Though, honestly, there’s not enough new accessible content to even warrant downloading the game, imho. Basically a single scene and some modicum of dialogue.
New game being bugged is a good reason to want a save, though. Never encountered that issue.
Admittedly, I’d be a bit interested in that as well. I’m not sure if I’ve ever fully unlocked all the scenes, even when I played through the part that should have unlocked them. That’s 2+ year old content, though, since the VR gallery has not been updated, afaik.