Updates to serialization

Fixed issue with null flavor effective date and incorrect column offsets
diff --git a/cda/plugins/org.eclipse.mdht.cda.xml.ui/src/org/eclipse/mdht/cda/xml/ui/handlers/SpreadsheetSerializer.java b/cda/plugins/org.eclipse.mdht.cda.xml.ui/src/org/eclipse/mdht/cda/xml/ui/handlers/SpreadsheetSerializer.java
index 8a5c0da..0deba71 100644
--- a/cda/plugins/org.eclipse.mdht.cda.xml.ui/src/org/eclipse/mdht/cda/xml/ui/handlers/SpreadsheetSerializer.java
+++ b/cda/plugins/org.eclipse.mdht.cda.xml.ui/src/org/eclipse/mdht/cda/xml/ui/handlers/SpreadsheetSerializer.java
@@ -1892,6 +1892,9 @@
 				row.createCell(offset++).setCellValue("");
 				row.createCell(offset++).setCellValue(CDAUtil.getDomainPath(sxcm_ts));
 
+				row.createCell(offset++).setCellValue("");
+				row.createCell(offset++).setCellValue(CDAUtil.getDomainPath(sxcm_ts));
+
 			}
 		} else {
 			row.createCell(offset++).setCellValue("");