Fix bug when reading variant and proxy transmitter. They were not set to not required.
Fix bug when reading variant and proxy transmitter. They were not set to not required.

d-tk/dtk,NicolasSchnitzler/dtk,d-tk/dtk,d-tk/dtk,rdebroiz/dtk,rdebroiz/dtk,d-tk/dtk,d-tk/dtk,d-tk/dtk,NicolasSchnitzler/dtk,NicolasSchnitzler/dtk,rdebroiz/dtk,NicolasSchnitzler/dtk,rdebroiz/dtk