The only way to export and move saves from PC to mobile is to use JoiPlay and run the game that way. But YMMV using JoiPlay.
We don't provide support for Joiplay since we have a dedicated mobile version, and because we don't want to / can't troubleshoot for everyone who doesn't have experience with using that. We include the option to begin at new content on all platforms and as long as a player doesn't delete the app from their phone, when a new version is installed it will retain their saves