diff --git a/build.gradle b/build.gradle
index b840d4f51..c75dec268 100644
--- a/build.gradle
+++ b/build.gradle
@@ -524,15 +524,19 @@ List<Provider<RegularFile>> plugins = [
 task "${baseName}#mixedClusterTask"(type: StandaloneRestIntegTestTask) {
     dependsOn "${baseName}#oldVersionClusterTask0"
     useCluster testClusters."${baseName}0"
-    // Only do mixed cluster tasks on same major version
-    if (bwc_major_version != opensearch_major_version) {
-      ignoreFailures = true
-    } else {
-      doFirst {
+    doFirst {
+      if (opensearch_major_version == bwc_major_version) {
         testClusters."${baseName}0".upgradeNodeAndPluginToNextVersion(plugins)
+      } else {
+        testClusters."${baseName}0".upgradeAllNodesAndPluginsToNextVersion(plugins)
       }
-      filter {
+    }
+    filter {
+      if (opensearch_major_version == bwc_major_version) {
         includeTestsMatching "org.opensearch.flowframework.bwc.*IT"
+      } else {
+        exclude '**/*Test*'
+        exclude '**/*IT*'
       }
     }
     systemProperty 'tests.rest.bwcsuite', 'mixed_cluster'
@@ -546,18 +550,14 @@ task "${baseName}#mixedClusterTask"(type: StandaloneRestIntegTestTask) {
 // This results in a mixed cluster with 1 node on the old version and 2 upgraded nodes.
 // This is used for rolling upgrade.
 task "${baseName}#twoThirdsUpgradedClusterTask"(type: StandaloneRestIntegTestTask) {
+    onlyIf { opensearch_major_version == bwc_major_version }
     dependsOn "${baseName}#mixedClusterTask"
     useCluster testClusters."${baseName}0"
-    // Only do mixed cluster tasks on same major version
-    if (bwc_major_version != opensearch_major_version) {
-      ignoreFailures = true
-    } else {
-      doFirst {
-        testClusters."${baseName}0".upgradeNodeAndPluginToNextVersion(plugins)
-      }
-      filter {
-        includeTestsMatching "org.opensearch.flowframework.bwc.*IT"
-      }
+    doFirst {
+      testClusters."${baseName}0".upgradeNodeAndPluginToNextVersion(plugins)
+    }
+    filter {
+      includeTestsMatching "org.opensearch.flowframework.bwc.*IT"
     }
     systemProperty 'tests.rest.bwcsuite', 'mixed_cluster'
     systemProperty 'tests.rest.bwcsuite_round', 'second'
@@ -570,18 +570,17 @@ task "${baseName}#twoThirdsUpgradedClusterTask"(type: StandaloneRestIntegTestTas
 // This results in a fully upgraded cluster.
 // This is used for rolling upgrade.
 task "${baseName}#rollingUpgradeClusterTask"(type: StandaloneRestIntegTestTask) {
-    dependsOn "${baseName}#twoThirdsUpgradedClusterTask"
-    useCluster testClusters."${baseName}0"
-    // Only do mixed cluster tasks on same major version
-    if (bwc_major_version != opensearch_major_version) {
-      ignoreFailures = true
-    } else {
+    if (opensearch_major_version == bwc_major_version) {
+      dependsOn "${baseName}#twoThirdsUpgradedClusterTask"
       doFirst {
         testClusters."${baseName}0".upgradeNodeAndPluginToNextVersion(plugins)
       }
-      filter {
-        includeTestsMatching "org.opensearch.flowframework.bwc.*IT"
-      }
+    } else {
+      dependsOn "${baseName}#mixedClusterTask"
+    }
+    useCluster testClusters."${baseName}0"
+    filter {
+      includeTestsMatching "org.opensearch.flowframework.bwc.*IT"
     }
     mustRunAfter "${baseName}#mixedClusterTask"
     systemProperty 'tests.rest.bwcsuite', 'mixed_cluster'