I haven't played since v0.4.02 (and yes 2020) looking forward to replay it once the update come out for free. wonder how much its changed!
Viewing post in New Amazing Update Available in Early Access comments
Oh wow that’s a long time XD you will be really surprised in how much has changed. There is a ton of story that’s been added since then. I will say though at 0.6.5 there was a major overhaul of the game that improved majority of the code and remastered a lot of renders along with new features. So since your save is from before that I would start a new save just to be safe but we also have saves in the discord server too 🙂 I hope you enjoy it!