Why does downgrading Flutter App causes Data loss? - flutter

Question

The Problem:
I have an app that uses sembast and shared_preferences to store data.
Recently I Accidently Downgraded my app which caused it to lose all data stored.
I tested it in both physical as well as Emulator device both result in the same issue.
is there a way to fix this?
Note: By "fix this" I mean to prevent further data loss in case of downgading not the recovery of the lost data)
Steps to Reproduce:
1)Create a project
2)Store data in shared -references or sembast
3)Hot restart
4)Change build number to a lower number than the previous build (Ex: 1.0.0+110 to 1.0.0+109)
5)Hot restart
Pubspec.yaml
version: 1.0.0+111
environment:
sdk: ">=2.9.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.3
excel: ^2.0.0-null-safety-3
shared_preferences: ^2.0.6
permission_handler: ^8.1.1
path_provider: ^2.0.2
sembast: ^3.1.0+2
sembast_web: ^2.0.0+2 #remove web version not being used
intl: ^0.17.0
provider: ^5.0.0
firebase_core: ^1.3.0
firebase_analytics: ^8.1.2
firebase_performance: ^0.7.0+5
firebase_crashlytics: ^2.0.6
firebase_auth: ^1.4.1
get_it: ^7.1.3
open_file: ^3.2.1
flutter_bloc: ^7.0.1
cloud_firestore: ^2.2.2 #remove and maybe use cloud functions
syncfusion_flutter_charts: ^19.1.69+1
url_launcher: ^6.0.3
file_picker: ^3.0.3
flutter_typeahead: ^3.1.3
purchases_flutter: ^3.3.0
device_info_plus: ^2.0.1
Flutter Doctor:
[√] Flutter (Channel stable, 2.2.2, on Microsoft Windows [Version 10.0.19043.1081], locale en-IN)
• Flutter version 2.2.2 at D:\Applications\flutter
• Framework revision d79295af24 (2 weeks ago), 2021-06-11 08:56:01 -0700
• Engine revision 91c9fc8fe0
• Dart version 2.13.3
[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0-rc1)
• Android SDK at D:\Applications\Android-SDK
• Platform android-S, build-tools 31.0.0-rc1
• Java binary at: D:\Applications\Android_studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe
[√] Android Studio (version 4.1.0)
• Android Studio at D:\Applications\Android_studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
[√] Connected device (3 available)
• sdk gphone x86 (mobile) • emulator-5554 • android-x86 • Android 11 (API 30) (emulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.114
• Edge (web) • edge • web-javascript • Microsoft Edge 91.0.864.37
• No issues found!