usually when you play these types of games, they would generate a text file simply named "log.txt" it may have an affix or prefix, but is generally called "log". simply move these txt files from your old version into your new version in order to carry a save over. Though the more different a version is from one another might make the transition not work, e.g. a save from version 0.1.0 might not work on version 1.2.3