You can transfer your old save to the new version if you are using the PC version.

Transferring saves from your old version to your new version.

In order to do this, here's a step by step process:

1- In the folder containing your new copy of Kingdom of Passion, find and click into the folder named 'www'

    -Within the new 'www' folder, create another folder named 'save'

1*- If this step is too complicated for you, starting up your new copy of Kingdom of Passion and saving will automatically create
    this new folder for you.

2- In the folder containing your OLD copy of Kingdom of Passion, find the save folder and copy EVERY file within the folder

3- Paste these files into your NEW save folder

If you are on android then download the new version before removing the old one.