Added condition for mutation input

app/assets/javascripts/boards/components/board_form.vue

@@ -162,8 +162,15 @@ export default {
     mutationVariables() {
       const { board } = this;
       /* eslint-disable @gitlab/require-i18n-strings */
-      const baseMutationVariables = {
+      let baseMutationVariables = {
         name: board.name,
+        hideBacklogList: board.hide_backlog_list,
+        hideClosedList: board.hide_closed_list,
+      };
+
+      if (this.scopedIssueBoardFeatureEnabled) {
+        baseMutationVariables = {
+          ...baseMutationVariables,
           weight: board.weight,
           assigneeId: board.assignee?.id ? convertToGraphQLId('User', board.assignee.id) : null,
           milestoneId:
@@ -171,12 +178,11 @@ export default {
               ? convertToGraphQLId('Milestone', board.milestone.id)
               : null,
           labelIds: board.labels.map(fullLabelId),
-        hideBacklogList: board.hide_backlog_list,
-        hideClosedList: board.hide_closed_list,
           iterationId: board.iteration_id
             ? convertToGraphQLId('Iteration', board.iteration_id)
             : null,
         };
+      }
       /* eslint-enable @gitlab/require-i18n-strings */
       return board.id
         ? {