Next update I will be retiring the old save system and the migration logic will be going away, I suspect this will happen in the next 1-2 days. I am in the process of testing some enemy balance changes on the unstable branch. When they're ready I will push to live and anyone who hasn't played since before 1.2.1 will lose out on their save data from that time. The game will just create a new save.
Retiring the old Save system.
