diff --git a/chrome/content/zotero/xpcom/schema.js b/chrome/content/zotero/xpcom/schema.js
index d0544105f..8b0c7bedd 100644
--- a/chrome/content/zotero/xpcom/schema.js
+++ b/chrome/content/zotero/xpcom/schema.js
@@ -2408,6 +2408,14 @@ Zotero.Schema = new function(){
 						+ ids.map(id => `(${id})`).join(', '));
 				}
 			}
+			
+			else if (i == 94) {
+				let ids = yield Zotero.DB.columnQueryAsync("SELECT itemID FROM publicationsItems WHERE itemID IN (SELECT itemID FROM items JOIN itemAttachments USING (itemID) WHERE linkMode=2)");
+				for (let id of ids) {
+					yield Zotero.DB.queryAsync("UPDATE items SET synced=0, clientDateModified=CURRENT_TIMESTAMP WHERE itemID=?", id);
+				}
+				yield Zotero.DB.queryAsync("DELETE FROM publicationsItems WHERE itemID IN (SELECT itemID FROM items JOIN itemAttachments USING (itemID) WHERE linkMode=2)");
+			}
 		}
 		
 		yield _updateDBVersion('userdata', toVersion);
diff --git a/resource/schema/userdata.sql b/resource/schema/userdata.sql
index 54d1bd03f..b6f5df10b 100644
--- a/resource/schema/userdata.sql
+++ b/resource/schema/userdata.sql
@@ -1,4 +1,4 @@
--- 93
+-- 94
 
 -- Copyright (c) 2009 Center for History and New Media
 --                    George Mason University, Fairfax, Virginia, USA