@Michiel_H 

The warning is ambiguous, it means you should be able to do says 5.13.4 to 5.13.8 as a controller migration (as 5.13 are the major and minors).

However, what they don't tell you is that the architecture of the controller is slighly different between the software and hardware controllers and the above no longer applies.  To my knowledge the only way to do that is use Site Migration, and that requires that the donor machine is <= the Major.Minor version of the destination.  So you can migrate a site from say 5.9.12 to 5.13.24 but not the other way around.  Hope that Helps!

Note to TPlink...another reason to expose the schema of the backup file.

  @Michiel_H 

you can freely move sites back and forth between 5.13.x hardware/software controllers.

  @Michiel_H @Hank21 

Hank, tell me this isn't so?  If it is, do I need to submit a feature request to actually make it possible again to migrate sites between h/w and s/w controllers?

  @d0ugmac1 

Yes, it is the truth. We will report this issue to the released department. However, I have received news that our hardware controller will update its firmware to version 5.13.30. X later.

LuisPalacios wrote

  @Hank21 

I'm on the exact same boat, is my only option to wait the whatever X later means? or would it be possible for me to downgrade my software controller without losing my current site configuration?

Hi@LuisPalacios 

I am afraid you cannot restore the configuration file from software controller v5.13.30.8 to previous version. If you don't want to configure the controller on hardware again, we may suggest you wait for its update patiently.