The synchroniser updates EBRIM with new data from the ISO 19113 client. The other way around does not exist. 

Behavior:
 * ebxml client only reads from GN
 * ISO 19113 client can read and write (harvest)
 * Synchroniser does a one time conversion of all the ISO 19113 data into EBRIM 
 * All information at course grained level can be found either via CSW/EBRIM or CSW/ISO19115
 * All information at fine grained level can be found via CSW/ISO19115
 * Not all information at fine grained level can be found via CSW/EBRIM. This because the EBRIM model does not cover all the details/semantics of the ISO19115 model