diff --git a/calendar/js/app.js b/calendar/js/app.js
index dc78ddc1fb..156127a5f1 100644
--- a/calendar/js/app.js
+++ b/calendar/js/app.js
@@ -1570,15 +1570,26 @@ var CalendarApp = /** @class */ (function (_super) {
      * @param {egwActionObject[]} _events
      */
     CalendarApp.prototype.action_open = function (_action, _events) {
-        var id = _events[0].id.split('::');
-        var app = id[0];
-        var app_id = id[1];
-        if (app_id && app_id.indexOf(':')) {
-            var split = id[1].split(':');
-            id = split[0];
+        var app, id, app_id;
+        // Try to get better by going straight for the data
+        var data = egw.dataGetUIDdata(_events[0].id);
+        if (data && data.data) {
+            app = data.data.app;
+            app_id = data.data.app_id;
+            id = data.data.id;
         }
         else {
-            id = app_id;
+            // Try to set some reasonable values from the ID
+            id = _events[0].id.split('::');
+            app = id[0];
+            app_id = id[1];
+            if (app_id && app_id.indexOf(':')) {
+                var split = id[1].split(':');
+                id = split[0];
+            }
+            else {
+                id = app_id;
+            }
         }
         if (_action.data.open) {
             var open = JSON.parse(_action.data.open) || {};
diff --git a/calendar/js/app.ts b/calendar/js/app.ts
index 757aec3870..b6643b77a1 100644
--- a/calendar/js/app.ts
+++ b/calendar/js/app.ts
@@ -1696,18 +1696,32 @@ class CalendarApp extends EgwApp
 	 */
 	action_open(_action, _events)
 	{
-		var id = _events[0].id.split('::');
-		var app = id[0];
-		var app_id = id[1];
-		if(app_id && app_id.indexOf(':'))
+		let app, id, app_id;
+		// Try to get better by going straight for the data
+		let data = egw.dataGetUIDdata(_events[0].id);
+		if(data && data.data)
 		{
-			var split = id[1].split(':');
-			id = split[0];
+			app = data.data.app;
+			app_id = data.data.app_id;
+			id = data.data.id;
 		}
 		else
 		{
-			id = app_id;
+			// Try to set some reasonable values from the ID
+			id = _events[0].id.split('::');
+			app = id[0];
+			app_id = id[1];
+			if(app_id && app_id.indexOf(':'))
+			{
+				let split = id[1].split(':');
+				id = split[0];
+			}
+			else
+			{
+				id = app_id;
+			}
 		}
+
 		if(_action.data.open)
 		{
 			var open = JSON.parse(_action.data.open) || {};