diff --git a/src/components/composer/composerDraftHelpers.ts b/src/components/composer/composerDraftHelpers.ts
index 2419f76b..c1b112f9 100644
--- a/src/components/composer/composerDraftHelpers.ts
+++ b/src/components/composer/composerDraftHelpers.ts
@@ -217,6 +217,7 @@ export function buildComposerConfigPersistPatch(node: WorkflowNode, config: Gene
     return {
       inputPrompt: config.prompt.trim(),
       selectedModel: config.selectedModel,
+      batchSize: config.batchSize,
       parameters,
       extraTaskParams: config.extraTaskParams ?? {},
       subType: config.subType,