5.0: ConverterServerConversionConversionJobSpec with startSuspended == TRUE

Today I've noticed that Converter 5.0 dosn't allow to sumbit a job with jobSpec.startSuspended == true

ConverterServerConversionConversionJobSpec jobSpec = new ConverterServerConversionConversionJobSpec();
jobSpec.setConversionParams(buildConversionParams());
jobSpec.setSource(buildComputerSpec(vm));
jobSpec.setName(vm.getName());
jobSpec.setStartSuspended(Boolean.TRUE);


ManagedObjectReference conversionManagerMOR = getServiceContent().getConversionManager();
              
ConverterServerConversionConversionJobInfo jobInfo = getPort().converterServerConversionManagerCreateJob(conversionManagerMOR, jobSpec, null);

The last call (CreateJob) fails with The operation is not supported on the object. exception. And that code works fine with Converter 4.3

Is that intended behaviour?