If you are playing through theitch.io app, you just need to download the update. Otherwise, yes. You will have to redownload the file and copy/paste your old save files into the new folder as it's shown here:
If you are playing through theitch.io app, you just need to download the update. Otherwise, yes. You will have to redownload the file and copy/paste your old save files into the new folder as it's shown here: