For android,
you can copy your save files from com.androidterrene_0_0_7 folder, into com.androidterrene_0_0_8 folder, located in your storage.
There's also an option to just jump to Act 2 when creating a new game if you want.
But saves won't work correctly, if they're more than one version older I.E saved from v 0.07 won't work with v0.09