Here's an answer I gave to a similar question: "Previous saves are intentionally not compatible with version 0.6, as it has a different progression that would be "spoiled" by having completed save files. If you really want to use your old saves in 0.6, you can copy the contents of the "NO_SKIN_ver04" folder(located in C:/Users/<User Name>/AppData/Local/) into the "NO_SKIN_ver06" folder(in the same location)"
Sorry, I must have expressed myself poorly, English is not my native language. What I meant is that when v06 came out I had seen the answer you quoted me, so I did indeed start all over again. I played several games on v06 until today when I opened the game, it started with the intro cinematic, and all my data was gone. I imagine that this kind of problem/bug is not your priority to fix but I still thought it was important to report it :) Anyways, i'll just play again from the start, it's not that much of a bother.
Wishing you the best of luck on the developpement, take all the time you need! i'm so excited to see the final game come out!
- a french fan