Hello!
I've never had this issue during my tests (but I'm not testing on mobile...). What version is you save from? 1.0 ? 1.1?
If it is from a v1.0 save, I think it might be due to an issue that needed version 1.1 "Load last data patch", which is not available anymore...
I'm planning to keep for future updates the "Load last data patch" from older version so that it will be possible to load an old save without that kind of issue.