Do you have a full example of the parameters on the command line?
/Issuer:"myorg-section,domain,com"
or
/Issuer:"myorg-section"
or
/Issuer:"myorg-section.domain.com"
I also have the same question for the Subject field
/Subject:"lastname, firstname"
/Subject:"CN=lastname,firstname,OU=myorg-section,OU=..."