diff --git a/src/kube-api.ts b/src/kube-api.ts
index c537732..832e77b 100644
--- a/src/kube-api.ts
+++ b/src/kube-api.ts
@@ -626,7 +626,7 @@ export class KubeSdk {
 
   public async applyYaml(
     specs: Unstructured[],
-    strategy?: string,
+    strategy: string = 'application/apply-patch+yaml',
     replacePaths?: string[][]
   ) {
     const validSpecs = specs
@@ -663,7 +663,7 @@ export class KubeSdk {
       const response = exist
         ? await this.patch(
             spec,
-            strategy || 'application/apply-patch+yaml',
+            strategy,
             replacePaths?.[index]
           )
         : await this.create(spec);
diff --git a/src/plugins/relation.ts b/src/plugins/relation.ts
index 9a49524..4a5b8cb 100644
--- a/src/plugins/relation.ts
+++ b/src/plugins/relation.ts
@@ -8,6 +8,7 @@ import {
 import { Job } from 'kubernetes-types/batch/v1';
 import { Unstructured, UnstructuredList } from '../kube-api';
 import { Service } from 'kubernetes-types/core/v1';
+import { omit } from 'lodash';
 
 export type Relation = {
   kind: string;
@@ -49,8 +50,10 @@ class RelationPlugin {
   }
 
   restoreItem(item: Unstructured): Unstructured {
-    delete (item.metadata as ExtendObjectMeta).relations;
-    return item;
+    return {
+      ...item,
+      metadata: omit(item.metadata, 'relations')
+    };
   }
 
   processPodSelector(item: Unstructured): Unstructured {