Further issues with hot-deploy legacydb delegator for external db

[Christian Carlow]

I gave up trying to create a separate legacydb delegator as instructed 
in: 
https://cwiki.apache.org/confluence/display/OFBIZ/Handling+of+External+data

I found this thread that suggested just adding the <group-map> element 
for the external db to the default delegator.  The problem I'm having 
now is when I try to select an entity from the external db, an error 
occurs because the GenericDelegator is trying to get LAST_UPDATED_STAMP, 
etc. fields which do not exist in those entities.

Anyone know how to prevent the delegator from trying to select those 
fields from the external db entities?