Shelly Update integration with exisiting shelly configuration

hi there,

I installed the “stock” shelly integration and use it for different shellys.
Now I wanted to add an update window, which shows me, what current version runs at the shelly and if there is an update available.
To get this information I installed ShellyForHASS to my running system.


and wanted to activate only “version” and “update” entity.

After installation I got the problem, that my “stock” shelly entities are grey and cannot use them anymore.

Is there a solution how I can integrate the update information to the existing shelly config?
It is not praticable to change all my settings from stock to ShellyForHass integration…

Regards
Timo