/questions/33539534/testflight-alert-while-testing-update-you-already-have-this-app-installed

I currently have the exact same issue as the problem I linked here. I deleted Application.getIosIdForVendorAsync() and replace it for Device.modelId
After that i create a new TestFlight version and I install it on top of the App Store version. And still the data is been deleted. And if I go back to the App Store version, the data appears again. I still don´t know what is causing the issue, but it’s been imposible for me find debugging what it might be causing the problem.
Also the Application.getIosIdForVendorAsync() was been used on the registration process only, so theres no way that it was causing the issue of deleting the data. As I said before, i deleted it just in case.