Application or SV Config code for GPS Block IIIA in Spirent simulated signals

Dear all,

I created a scenario on PosApp, with a Spirent GSS7000 connected to a GPS receiver, to simulate RF GPS signals where all SVs are identified as GPS Block IIIA in SV Config code (100). For that I modified the SV Config code to set GPS Block IIIA in GPS Signal Source File / Signal Control / General / SV Config.

However after the test, I extracted the navigation message decoded by my receiver and I note that not any GPS satellite is identified as Block IIIA in SV Configuration (subframe 4 page 25).

Do you have any idea why it is not coherent with the scenario ?

I fear that the modification has not been applied in the navigation message of the RF signals generated by the Spirent.

Thanks for your help.