To quote the main menu, "Saves made with 0.22.0 should be compatible with future ones." - so at least the intention is for savegame compatibility going forward.
And not only does it do a load instead of replacing the existing save, it does so without confirmation, instantly throwing away your game progress instead of saving it as you intended. Lame-ass shit.
Delete whatever you don't want. Or be like me and delete everything so you start fresh. Hopefully this is the last time and saves actually carry over now.
This new save system doesn't work anyway since you have different routes (which I think is great). Not being able to name them it takes too much time to find what's what. The first Bindr game was done so much better.