Multiple LNB with DiSEqC 1.2 positioner

My Satellite Setup
echostar ad3000ip
Hi guys,

I'm going to purchase KSC-N550H2 satellite receiver, which is fit to my requirements for many reasons. To learn more on KSC-550H2, I downloaded the manual from Kaon website. I discovered some possible problem in receiver setup for using single motorized antenna with V-BOX (DiSEqC1.2 positioner) and multiple LNB.

The KSC-550H2 manual provides the following possibilities in the receiver MENU:
1. Fixed anntenna, DiSEqC 1.0 switch for up to 4 multiple LNB handling
2. Motorized antenna with DiSEqC1.2 positioner, no LNB switching support for DiSEqC 1.0 switch.

I found that such a problem can be found in some other receivers like echostar -780, -890, ...

Please, help how such receivers can support both DiSEqC 1.0 and DiSEqC1.2 standards for handling multiple LNB with DiSEqC 1.0 switch installed on motorized antenna with DiSEqC1.2 positioner.

Thank you guys in advance for prompt reply.

Best Regards,