virtual sensor

1. Made a virtual sensor (air temperature): this is now listed as "Air temp 1", the real sensor is now listed as "Air temp 2"!!!.
(Profilux II plus, version 5.00p)
2. How to delete a virtual sensor? (delete, not disable)
3. How to set a virtual sensor by means of ProfiluxControl?

virtual sensors can only be managed on the device itself

I can live with your answer Matthias, but how to explain that the original sensor gets the next number, instead of the virtual one? Makes no sense to me, see the manual too.