1. Clearly document what is required to achieve "told" bnode semantics.
2. When STORE_BLANK_NODES is true, set PRESERVE_BNODE_IDS true as well and then use this as the default where possible. This would include SPARQL UPDATE LOAD (information is available) and probably the DataLoader (including the servlet version) and the InsertServlet and UpdateService. Write unit tests to verify the correct default pattern.