diff --git a/package.json b/package.json
index d0056a4..e582780 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "route-engine-js",
-  "version": "1.20.3",
+  "version": "1.20.4",
   "description": "A lightweight Visual Novel engine built in JavaScript for creating interactive narrative games with branching storylines",
   "repository": {
     "type": "git",
diff --git a/spec/RouteEngine.form.test.js b/spec/RouteEngine.form.test.js
index 3046c6a..5977266 100644
--- a/spec/RouteEngine.form.test.js
+++ b/spec/RouteEngine.form.test.js
@@ -30,12 +30,29 @@ const createProjectData = () => ({
           },
           {
             id: "submit-button",
-            type: "rect",
+            type: "container",
             formRole: "submit",
             x: 100,
             y: 230,
             width: 120,
             height: 48,
+            children: [
+              {
+                id: "submit-label",
+                type: "rect",
+                x: 0,
+                y: 0,
+                width: 120,
+                height: 48,
+                click: {
+                  payload: {
+                    actions: {
+                      nextLine: {},
+                    },
+                  },
+                },
+              },
+            ],
           },
         ],
       },
@@ -116,7 +133,7 @@ const createProjectData = () => ({
   },
 });
 
-const createEngine = () => {
+const createEngine = ({ markLineCompleted = true } = {}) => {
   const engine = createRouteEngine({
     handlePendingEffects: () => {},
   });
@@ -126,7 +143,10 @@ const createEngine = () => {
       projectData: createProjectData(),
     },
   });
-  engine.handleAction("markLineCompleted", {});
+
+  if (markLineCompleted) {
+    engine.handleAction("markLineCompleted", {});
+  }
 
   return engine;
 };
@@ -207,6 +227,81 @@ describe("RouteEngine forms", () => {
     expect(submitButton.click.payload.actions.submitForm).not.toHaveProperty(
       "formId",
     );
+    expect(Object.keys(submitButton.click.payload.actions)).toEqual([
+      "submitForm",
+    ]);
+  });
+
+  it("submits when clicking a child inside a submit-role container", () => {
+    const engine = createEngine({ markLineCompleted: false });
+    let renderState = engine.selectRenderState();
+    const nameInput = findElement(renderState.elements, "name-input");
+    const emailInput = findElement(renderState.elements, "email-input");
+    let submitLabel = findElement(renderState.elements, "submit-label");
+
+    expect(submitLabel.click.payload).toMatchObject({
+      _interactionSource: "form",
+      actions: {
+        submitForm: {
+          formKey: "section1:line1:profile-contact-form",
+          actions: {
+            nextLine: {},
+          },
+        },
+      },
+    });
+
+    expect(Object.keys(submitLabel.click.payload.actions)).toEqual([
+      "submitForm",
+    ]);
+
+    engine.handleActions(nameInput.change.payload.actions, {
+      _event: {
+        value: "Ada",
+      },
+    });
+    engine.handleActions(emailInput.change.payload.actions, {
+      _event: {
+        value: "ada@example.com",
+      },
+    });
+
+    renderState = engine.selectRenderState();
+    submitLabel = findElement(renderState.elements, "submit-label");
+    engine.handleActions(submitLabel.click.payload.actions);
+
+    expect(engine.selectSystemState().contexts[0].pointers.read.lineId).toBe(
+      "line2",
+    );
+  });
+
+  it("valid form submit advances even before the form line is marked completed", () => {
+    const engine = createEngine({ markLineCompleted: false });
+    let renderState = engine.selectRenderState();
+    const nameInput = findElement(renderState.elements, "name-input");
+    const emailInput = findElement(renderState.elements, "email-input");
+    let submitButton = findElement(renderState.elements, "submit-button");
+
+    expect(engine.selectSystemState().global.isLineCompleted).toBe(false);
+
+    engine.handleActions(nameInput.change.payload.actions, {
+      _event: {
+        value: "Ada",
+      },
+    });
+    engine.handleActions(emailInput.change.payload.actions, {
+      _event: {
+        value: "ada@example.com",
+      },
+    });
+
+    renderState = engine.selectRenderState();
+    submitButton = findElement(renderState.elements, "submit-button");
+    engine.handleActions(submitButton.click.payload.actions);
+
+    expect(engine.selectSystemState().contexts[0].pointers.read.lineId).toBe(
+      "line2",
+    );
   });
 
   it("keeps edits transient until a valid multi-field submit commits variables and runs actions", () => {
diff --git a/src/stores/constructRenderState.js b/src/stores/constructRenderState.js
index 1406b7c..96811ac 100644
--- a/src/stores/constructRenderState.js
+++ b/src/stores/constructRenderState.js
@@ -1542,7 +1542,7 @@ const FORM_EVENT_KEYS = new Set([
 
 const FORM_ROLE_SUBMIT = "submit";
 
-const mergeEventActions = (eventConfig, actions) => {
+const mergeEventActions = (eventConfig, actions, options = {}) => {
   const payload =
     eventConfig?.payload &&
     typeof eventConfig.payload === "object" &&
@@ -1553,31 +1553,44 @@ const mergeEventActions = (eventConfig, actions) => {
     payload.actions && typeof payload.actions === "object"
       ? payload.actions
       : {};
+  const nextActions =
+    options.replaceActions === true
+      ? actions
+      : {
+          ...existingActions,
+          ...actions,
+        };
 
   return {
     ...(eventConfig || {}),
     payload: {
       ...payload,
-      actions: {
-        ...existingActions,
-        ...actions,
-      },
+      actions: nextActions,
     },
   };
 };
 
-const enrichFormElements = (node, form) => {
+const enrichFormElements = (node, form, options = {}) => {
   if (Array.isArray(node)) {
-    return node.map((item) => enrichFormElements(item, form));
+    return node.map((item) => enrichFormElements(item, form, options));
   }
 
   if (!node || typeof node !== "object") {
     return node;
   }
 
+  const isElementNode = typeof node.type === "string";
+  const isSubmitRole = isElementNode && node.formRole === FORM_ROLE_SUBMIT;
+  const inheritsSubmitRole = isElementNode && options.submitRoleAncestor;
+  const childOptions =
+    isSubmitRole || inheritsSubmitRole ? { submitRoleAncestor: true } : {};
   const enrichedNode = {};
   for (const [key, value] of Object.entries(node)) {
-    enrichedNode[key] = enrichFormElements(value, form);
+    enrichedNode[key] = enrichFormElements(
+      value,
+      form,
+      key === "children" ? childOptions : {},
+    );
   }
 
   let formNode = enrichedNode;
@@ -1614,10 +1627,12 @@ const enrichFormElements = (node, form) => {
     }
   }
 
-  if (formNode.formRole === FORM_ROLE_SUBMIT) {
+  if (formNode.formRole === FORM_ROLE_SUBMIT || inheritsSubmitRole) {
     return {
       ...formNode,
-      click: mergeEventActions(formNode.click, form.submitActions),
+      click: mergeEventActions(formNode.click, form.submitActions, {
+        replaceActions: true,
+      }),
     };
   }
 
diff --git a/src/stores/system.store.js b/src/stores/system.store.js
index 4c2bbab..746646b 100644
--- a/src/stores/system.store.js
+++ b/src/stores/system.store.js
@@ -3420,6 +3420,22 @@ const createSubmittedFormContext = (activeForm, values) => ({
   fieldList: cloneStateValue(activeForm.fieldList),
 });
 
+const completeCurrentLineForSubmittedForm = (state) => {
+  if (state.global.isLineCompleted) {
+    return;
+  }
+
+  state.global.isLineCompleted = true;
+  delete state.global.pendingScreenTransition;
+
+  const pointer = selectCurrentPointer({ state })?.pointer;
+  const sectionId = pointer?.sectionId;
+  const lineId = pointer?.lineId;
+  if (sectionId && lineId) {
+    recordViewedLine(state, { sectionId, lineId });
+  }
+};
+
 export const updateFormField = ({ state }, payload = {}) => {
   const activeForm = getActiveFormForPayload(state, payload);
   const fieldId = payload.field;
@@ -3546,6 +3562,7 @@ export const submitForm = ({ state }, payload = {}) => {
   queueScopedDataPersistence(state, globalUpdates);
 
   const formContext = createSubmittedFormContext(activeForm, storedValues);
+  completeCurrentLineForSubmittedForm(state);
   delete state.global.formDrafts[activeForm.key];
   state.global.pendingEffects.push({
     name: "render",
diff --git a/vt/specs/form/basic.yaml b/vt/specs/form/basic.yaml
index 781d41e..45411e0 100644
--- a/vt/specs/form/basic.yaml
+++ b/vt/specs/form/basic.yaml
@@ -5,7 +5,7 @@ specs:
   - background nextLine clicks are blocked while the form is visible
   - empty submit keeps the form visible and shows required errors
   - filled inputs stay visible before submit
-  - filling both inputs and clicking submit commits variables and advances
+  - filling both inputs and clicking submit child commits variables and advances
 skipInitialScreenshot: true
 viewport:
   id: capture
@@ -138,21 +138,30 @@ resources:
           content: "Code is required"
           textStyleId: errorText
         - id: submit-button
-          type: rect
+          type: container
+          formRole: submit
           x: 650
           y: 420
           width: 190
           height: 58
-          colorId: submitColor
-          click:
-            payload:
-              actions: ${form.submitActions}
-        - id: submit-label
-          type: text
-          x: 706
-          y: 436
-          content: "Submit"
-          textStyleId: buttonText
+          children:
+            - id: submit-hit
+              type: rect
+              x: 0
+              y: 0
+              width: 190
+              height: 58
+              colorId: submitColor
+              click:
+                payload:
+                  actions:
+                    nextLine: {}
+            - id: submit-label
+              type: text
+              x: 56
+              y: 16
+              content: "Submit"
+              textStyleId: buttonText
     resultLayout:
       elements:
         - id: result-title