Patch-Magento_ConfigurableProduct-M2.2.7-delete-simple-products-on-validation.patch

diff --git a/view/adminhtml/web/js/variations/variations.js b/view/adminhtml/web/js/variations/variations.js
--- a/view/adminhtml/web/js/variations/variations.js
+++ b/view/adminhtml/web/js/variations/variations.js
@@ -410,13 +410,11 @@ define([
             if (this.source.data['configurable-matrix']) {
                 this.source.data['configurable-matrix-serialized'] =
                     JSON.stringify(this.source.data['configurable-matrix']);
-                delete this.source.data['configurable-matrix'];
             }

             if (this.source.data['associated_product_ids']) {
                 this.source.data['associated_product_ids_serialized'] =
                     JSON.stringify(this.source.data['associated_product_ids']);
-                delete this.source.data['associated_product_ids'];
             }
         },