Get a file explorer, I use cx file explorer, then the pathing you will want to take is :
main storage> android> data> welcome.to.erosland> files> saves
Manual save files are organized by where they can be found on your in game menu, for example 1-1- LT1.save will be the top left on page 1 and 1-4 is the bottom right corner on page 1. 2-1 is page 2 in the top left ect.
Copy the files that you want to bring to the new version and paste them into a folder, or just put them in your downloads like I do
When you want to put the files back into the game, just copy it from wherever you put it and paste it into the saves folder for the game.
It looks like alot of work in text but it's not