diff --git a/chrome/content/zotero/xpcom/data/item.js b/chrome/content/zotero/xpcom/data/item.js
index fd26904cf3..04988c1cda 100644
--- a/chrome/content/zotero/xpcom/data/item.js
+++ b/chrome/content/zotero/xpcom/data/item.js
@@ -402,6 +402,9 @@ Zotero.Item.prototype.loadFromRow = function(row, reload) {
 					this['_' + col] = row[col] ? parseInt(row[col]) : 0;
 					break;
 				
+				case 'sourceItemID':
+					this['_sourceItem'] = row[col] || false;
+				
 				default:
 					this['_' + col] = row[col] ? row[col] : '';
 			}
diff --git a/chrome/content/zotero/xpcom/data/items.js b/chrome/content/zotero/xpcom/data/items.js
index cca97c184a..8116c041ee 100644
--- a/chrome/content/zotero/xpcom/data/items.js
+++ b/chrome/content/zotero/xpcom/data/items.js
@@ -46,7 +46,7 @@ Zotero.Items = new function() {
 			_primaryFields = Zotero.DB.getColumns('items');
 			_primaryFields.splice(_primaryFields.indexOf('clientDateModified'), 1);
 			_primaryFields = _primaryFields.concat(
-				['firstCreator', 'numNotes', 'numAttachments']
+				['firstCreator', 'numNotes', 'numAttachments', 'sourceItemID']
 			);
 		}
 		
@@ -749,7 +749,9 @@ Zotero.Items = new function() {
 			+ "(SELECT COUNT(*) FROM itemNotes INo WHERE sourceItemID=I.itemID AND "
 			+ "INo.itemID NOT IN (SELECT itemID FROM deletedItems)) AS numNotes, "
 			+ "(SELECT COUNT(*) FROM itemAttachments IA WHERE sourceItemID=I.itemID AND "
-			+ "IA.itemID NOT IN (SELECT itemID FROM deletedItems)) AS numAttachments "
+			+ "IA.itemID NOT IN (SELECT itemID FROM deletedItems)) AS numAttachments, "
+			+ "(CASE I.itemTypeID WHEN 14 THEN (SELECT sourceItemID FROM itemAttachments IA WHERE IA.itemID=I.itemID) "
+			+ "WHEN 1 THEN (SELECT sourceItemID FROM itemNotes INo WHERE INo.itemID=I.itemID) END) AS sourceItemID "
 			+ 'FROM items I WHERE 1';
 		if (arguments[0]) {
 			sql += ' AND I.itemID IN (' + Zotero.join(arguments[0], ',') + ')';