diff --git a/client/services/serviceFetch.js b/client/services/serviceFetch.js
index 2293b8875..db53b65cd 100644
--- a/client/services/serviceFetch.js
+++ b/client/services/serviceFetch.js
@@ -393,7 +393,21 @@ function fetchInstancesByCompose(
               var branchName = instance.getBranchName();
               composeMasterConfig.children[branchName] = composeMasterConfig.children[branchName] || {};
               var composeMasterConfigIsolationChild = composeMasterConfig.children[branchName];
-              if (instance.attrs.isIsolationGroupMaster && !instance.attrs.inputClusterConfig.parentInputClusterConfigId) {
+              if (instance.attrs.isIsolationGroupMaster &&
+                (
+                  !instance.attrs.inputClusterConfig.parentInputClusterConfigId ||
+                  instance.attrs.inputClusterConfig.parentInputClusterConfigId !== instance.attrs.inputClusterConfig._id
+                )
+              ) {
+                if (composeMasterConfigIsolationChild.master) {
+                  if (instance.attrs.isTesting) {
+                    composeMasterConfigIsolationChild.testing = composeMasterConfigIsolationChild.testing || [];
+                    composeMasterConfigIsolationChild.testing.push(instance);
+                    return;
+                  }
+                  composeMasterConfigIsolationChild.testing = composeMasterConfigIsolationChild.testing || [];
+                  composeMasterConfigIsolationChild.testing.push(composeMasterConfigIsolationChild.master);
+                }
                 composeMasterConfigIsolationChild.master = instance;
                 return;
               }