Hello Kim,
What your new
.csprojfile needs for Google Play Store
Your current project file is missing several settings required by the Google Play Store. You will need to copy the following from your old VS 2022 project: signing settings, R8 optimization settings, architecture support, debug symbols, and the separate Debug/Release build configurations. You can copy these directly from your working VS 2022 project file into your new one.
Can you use the same
.csprojfor both Internal Testing and Google Play Store?
Yes, you can use the same .csproj file for both. The difference is controlled by your build configuration—Debug for testing and Release for the store. Internal Testing accepts debug builds, but the Google Play Store requires a properly signed release build.
About your
proguard.cfgand.keystorefiles
Your proguard.cfg file is not needed because your project uses R8 optimization, which is Google's newer tool that replaced ProGuard. In case you still want to use ProGuard, you can include the proguard.cfg file and reference it in your project settings.
<ItemGroup>
<ProguardConfiguration Include="proguard.cfg" />
</ItemGroup>
Your .keystore file, however, is required for any Google Play upload. Please ensure it is included in your Android project and that the path in your project file is correct.
I hope this helps clarify what you need. Please let me know if you have any other questions.