The current process for releasing a signed native app requires a double build activity:
First: native_builder.exe build
Then: then go to the appcenter, take the keystore having signed certificates, add that to the new build and save and build again
Add another parameter to native-builder.exe that allows you to pass your keystore along with the command and make the native_builder add a step in the appcenter in which it adds the keystore to the new build, before he starts building the build.
I just heard back from Mendix that they are building an awesome UI for this process. No timeline, but they are testing…