diff --git a/app/catalog-tab/launch/route.js b/app/catalog-tab/launch/route.js
index 5703cd771..2db7492fe 100644
--- a/app/catalog-tab/launch/route.js
+++ b/app/catalog-tab/launch/route.js
@@ -21,18 +21,29 @@ export default Route.extend({
   model(params, transition) {
     const { store, clusterStore } = this;
 
-    const dependencies = {
-      tpl:        get(this, 'catalog').fetchTemplate(params.template),
-      namespaces: clusterStore.findAll('namespace')
-    };
-
-    if ( params.upgrade ) {
-      dependencies.upgrade = get(this, 'catalog').fetchTemplate(`${ params.template }-${ params.upgrade }`, true);
-    }
+    let dependencies = { namespaces: clusterStore.findAll('namespace') };
 
     if (params.appId) {
       dependencies.app = store.find('app', params.appId);
+      dependencies.app.then((appData) => {
+        const getCurrentVersion = (app) => {
+          const externalId = app.externalId;
+          const splitId = externalId.split('version=')
+          const currentVersion = splitId[1];
+
+          return currentVersion;
+        }
+        const currentVersion = getCurrentVersion(appData);
+
+        dependencies.upgrade = get(this, 'catalog').fetchTemplate(`${ params.template }-${ params.upgrade }`, true, currentVersion);
+        dependencies.tpl = get(this, 'catalog').fetchTemplate(params.template, false, currentVersion);
+      })
+        .catch((err) => {
+          throw new Error(err);
+        })
     }
+
+
     if (params.appName) {
       dependencies.app = store.find('app', null, { filter: { name: params.appName } }).then((apps) => get(apps, 'firstObject'));
     }
diff --git a/app/models/app.js b/app/models/app.js
index 611f600d5..d6458aa6f 100644
--- a/app/models/app.js
+++ b/app/models/app.js
@@ -216,14 +216,16 @@ const App = Resource.extend(StateCounts, EndpointPorts, {
       const catalogId     = get(this, 'externalIdInfo.catalog');
       const vKeys         = Object.keys(get(this, 'catalogTemplate.versionLinks'));
       const latestVersion =  vKeys[vKeys.length - 1];
+      const currentVersion = get(this, 'externalIdInfo.version')
 
       get(this, 'router').transitionTo('catalog-tab.launch', templateId, {
         queryParams: {
-          appId:       get(this, 'id'),
-          catalog:     catalogId,
-          namespaceId: get(this, 'targetNamespace'),
-          upgrade:     latestVersion,
-          istio:       get(this, 'isIstio')
+          appId:        get(this, 'id'),
+          catalog:      catalogId,
+          namespaceId:  get(this, 'targetNamespace'),
+          upgrade:      latestVersion,
+          istio:        get(this, 'isIstio'),
+          currentVersion
         }
       });
     },
diff --git a/lib/shared/addon/catalog/service.js b/lib/shared/addon/catalog/service.js
index e4916760c..d605229e0 100644
--- a/lib/shared/addon/catalog/service.js
+++ b/lib/shared/addon/catalog/service.js
@@ -67,7 +67,7 @@ export default Service.extend({
       let extInfo = parseHelmExternalId(app.get('externalId'));
 
       if ( extInfo && extInfo.templateId ) {
-        deps.push(this.fetchTemplate(extInfo.templateId, false));
+        deps.push(this.fetchTemplate(extInfo.templateId, false, extInfo.version));
       }
     });
 
@@ -81,7 +81,7 @@ export default Service.extend({
       let extInfo = get(app, 'externalIdInfo');
 
       if ( extInfo && extInfo.templateId ) {
-        deps.push(this.fetchTemplate(extInfo.templateId, false));
+        deps.push(this.fetchTemplate(extInfo.templateId, false, extInfo.version));
       }
     });
 
@@ -108,8 +108,9 @@ export default Service.extend({
     return get(this, 'globalStore').getById('templateversion', id);
   },
 
-  fetchTemplate(id, upgrade = false) {
+  fetchTemplate(id, upgrade = false, currentVersion) {
     let type, cached, params;
+    const clusterName = get(this, 'scope.currentCluster.id');
 
     if ( upgrade === true ) {
       type = 'templateversions';
@@ -117,13 +118,24 @@ export default Service.extend({
     } else {
       type = 'templates';
       // we cant check for cached here anylonger because the clusterName is used to build a dynamic versions list of compatible versions for this clusters kube version
-      params = { clusterName: get(this, 'scope.currentCluster.id') };
+      params = {
+        clusterName,
+        currentVersion
+      };
     }
 
     if ( cached ) {
       return resolve(cached);
     }
 
+    params = {
+      // currentVersion allows legacy apps to be upgraded
+      // after Rancher is upgraded to a version higher than the app's max
+      // supported Rancher version
+      clusterName,
+      currentVersion,
+    }
+
     let url = this._addLimits(`${ get(this, 'app.apiEndpoint') }/${ type }/${ id }`, params);
 
     return get(this, 'globalStore').request({ url });