ok, so I dug a little deeper and it appears that there is no way to do this 
without replicating the entire identity/demographic data in the jbpm database.  
So in order to achieve this functionality and only have one set of data to 
manage, I see only two ways:

1. Drop the foreign key constraint that leads from the jbpm_pooledactor table 
to the jbpm_taskactorpool table.

2. Create a new table very similar to the jbpm_taskactorpool without a 
constraint to the jbpm_pooledactor table.  This could be linked via a custom 
TaskInstance class.

In both the above scenarios a foreign key will exist to link the task instance 
to the task actor pool, and each actor in the pool table will be stored 
alongside that foreign key.  The only difference will be the lack of 
constraints to the identity model of jBPM (e.g. the jbpm_pooledactor table as 
constraint fk_tskactpol_plact).  I presume to have this functionality without 
adopting the "optional" jBPM identity model, such a change will be required in 
the jBPM code.  I look forward to any feedback, esp if anyone has an arguement 
for redundantly storing the identity model.  Thanks again.

Thanks

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