Data loss if replacing FM Go 12 with FM Go 13
12 and 13
Operating system version
Description of the issue
All data and databases are gone when installing FM Go13 and deleting FM Go 12.
Recovering with iTunes Backup does not work (just the app will be recovered, not the data.
Steps to reproduce the problem
Delete FMGo 12 and install FMGo 13 or other way around.
iOS apps have to be updated, not replaced.
It has no common filesystem like Mac OS or Windows, etc.
Sandboxing does not allow such actions like replacing an app every year.
That is no good practice on iOS.
All the data inside FM Go 12 is gone.
Saving all data to desktop before replacing FM Go 12 with FM Go 13.
But it is too late for me.
Hopefully this was the last replacement for the next 10 years or so (until the data format will be changed to .fmp30 or there is any better way to change the format).
And you have 10 years to find a customer friendly solution until the next replacement will happen.
FM Go 13 is now identical for iPad and iPhone, hope that was the reason for the replacement!