Only Engine of 20.4.40 Installed?

I just checked for updates, and got an approx 47 MB update to the NIS engine.  No reboot or restart of NIS was requested.  I've rebooted and noticed 20.4.0.40 directories were added to my NIS engine folder aliong with the 20.3.1 engine folder still being present.  Is this just a pre-install before the full update?  Tt looks like my engine was updated, but I'm still showing version 20.3.1 on my user interface so the full update isn't complete yet.  I've rebooted serveral times and checked for more updates, but my NIS is still not updateding to the new version.

 

Is this normal for the engine to update without the MUI and other NIS peices to update yet?  I guess I should just wait until the rest of the update comes through in the coming days?