I don't know which platform you play on, but on PC you simply copy the saves folder (found in game folder).
Idk if it works on all androids but what I would whenever there's a new update I just download the game again and use an app that does download game again (SHAREit) and a text appear "your downloading an application again for an update would you like to press confirm?" And I press confirm and then the new update comes into my game (if this doesn't make sense I'm very sorry English is not my first language oh and you have to be at the town square to download the update it else it will corrupt it)