SONAR and MUSE RECEPTOR

I have the East West Orchestra loaded on the MUSE RECEPTOR and am controlling it with SONAR 8.5.
I can load patches on the RECEPTOR from SONAR, but they reload each time I play the piece!
There are no instrument changes in the score, so loading the instruments the first time should be enough.
 
Anybody know what is going on?
 
Thanks,
 
Les