This would mean, since my saves are from 6.5, I will have to use the given save, and then start over to create another game with the other route.

With games where the development takes as long as this game, it's really hard for me to just play one route, until I finish that route, then start over and play a different route. SO, I am the type to play multiple routes, each update, as the development progresses.
And I chose not to play the 7.2 update, because it appeared to just be a quality overhaul, with no new significant scenes. Had I known older saves wouldn't work, I would have downloaded 7.2, and made new saves.

Welp, some decisions will be made, I guess.