BackupAgent fails after package rename

Question

I have an app, that uses backup feature. This is line from my manifest:

android:backupAgent="my.package.backup.BackupAgent"

It works fine in current version. But now I want to move the same BackupAgent to another package my.package.other.backup.package.

When I install new version to new device, it still works fine. But when I try to install new version over old one - it causes backup agent to crash with error:

java.lang.ClassNotFoundException: my.package.backup.BackupAgent in loader dalvik.system.PathClassLoader

Why Android looks for BackupAgent in old package?

Answer 1

I still don't know how to solve this problem, but finally I just create empty class on old place, that extends new one.