You have to manually copy you save file for each release. Saves from before v1.0 won't work anymore as I remade a lot of back end systems for the full Chapter 1 update. So only Chapter One saves file from v1.0.0 -> v1.1.0 will work and there is a guide on my patreon on how to do it :) (v1.1.0 is a patreon only new update i put out)