diff --git a/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.test.ts b/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.test.ts
index d85cfd4edead..e19a8b4475c6 100644
--- a/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.test.ts
+++ b/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.test.ts
@@ -221,4 +221,27 @@ describe('preview specific functionality', () => {
       });
     `);
   });
+
+  it('should not change non story exports', async () => {
+    await expect(
+      transform(dedent`
+        import type { Preview } from '@storybook/react-vite'
+        
+        export const withStore: Decorator = () => {}
+
+        const preview: Preview = {
+          tags: []
+        };
+        export default preview;
+      `)
+    ).resolves.toMatchInlineSnapshot(`
+      import { definePreview } from '@storybook/react-vite';
+
+      export const withStore: Decorator = () => {};
+
+      export default definePreview({
+        tags: [],
+      });
+    `);
+  });
 });
diff --git a/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.ts b/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.ts
index c0291370dc2a..227f0e3ce707 100644
--- a/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.ts
+++ b/code/lib/cli-storybook/src/codemod/helpers/config-to-csf-factory.ts
@@ -27,7 +27,10 @@ export async function configToCsfFactory(
 
   const methodName = configType === 'main' ? 'defineMain' : 'definePreview';
   const programNode = config._ast.program;
-  const hasNamedExports = Object.keys(config._exportDecls).length > 0;
+  const exportDecls = config._exportDecls;
+
+  const defineConfigProps = getConfigProperties(exportDecls, { configType });
+  const hasNamedExports = defineConfigProps.length > 0;
 
   /**
    * Scenario 1: Mixed exports
@@ -42,11 +45,7 @@ export async function configToCsfFactory(
    * Transform into: `export default defineMain({ tags: [], parameters: {} })`
    */
   if (config._exportsObject && hasNamedExports) {
-    const exportDecls = config._exportDecls;
-
-    const defineConfigProps = getConfigProperties(exportDecls);
     config._exportsObject.properties.push(...defineConfigProps);
-
     programNode.body = removeExportDeclarations(programNode, exportDecls);
   } else if (config._exportsObject) {
     /**
@@ -106,9 +105,6 @@ export async function configToCsfFactory(
      *
      * Transform into: export default defineMain({ foo: {}, bar: '' });
      */
-    const exportDecls = config._exportDecls;
-    const defineConfigProps = getConfigProperties(exportDecls);
-
     // Construct the `define` call
     const defineConfigCall = t.callExpression(t.identifier(methodName), [
       t.objectExpression(defineConfigProps),
diff --git a/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.test.ts b/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.test.ts
index 02058b9c5698..999c6c325f5b 100644
--- a/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.test.ts
+++ b/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.test.ts
@@ -191,7 +191,7 @@ describe('getConfigProperties', () => {
       bar: t.variableDeclarator(t.identifier('bar'), t.numericLiteral(42)),
     };
 
-    const properties = getConfigProperties(exportDecls);
+    const properties = getConfigProperties(exportDecls, { configType: 'main' });
 
     expect(properties).toHaveLength(2);
     expect(properties[0].key.name).toBe('foo');
@@ -205,7 +205,7 @@ describe('getConfigProperties', () => {
       foo: t.functionDeclaration(t.identifier('foo'), [], t.blockStatement([])),
     };
 
-    const properties = getConfigProperties(exportDecls);
+    const properties = getConfigProperties(exportDecls, { configType: 'main' });
 
     expect(properties).toHaveLength(1);
     expect(properties[0].key.name).toBe('foo');
diff --git a/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.ts b/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.ts
index 3326764456d8..0b23e670d09e 100644
--- a/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.ts
+++ b/code/lib/cli-storybook/src/codemod/helpers/csf-factories-utils.ts
@@ -1,5 +1,25 @@
 import { types as t, traverse } from 'storybook/internal/babel';
 
+const projectAnnotationNames = [
+  'decorators',
+  'parameters',
+  'args',
+  'argTypes',
+  'loaders',
+  'beforeEach',
+  'afterEach',
+  'render',
+  'tags',
+  'mount',
+  'argsEnhancers',
+  'argTypesEnhancers',
+  'beforeAll',
+  'initialGlobals',
+  'globalTypes',
+  'applyDecorators',
+  'runStep',
+];
+
 export function cleanupTypeImports(programNode: t.Program, disallowList: string[]) {
   const usedIdentifiers = new Set<string>();
 
@@ -75,12 +95,17 @@ export function removeExportDeclarations(
 }
 
 export function getConfigProperties(
-  exportDecls: Record<string, t.VariableDeclarator | t.FunctionDeclaration>
+  exportDecls: Record<string, t.VariableDeclarator | t.FunctionDeclaration>,
+  options: { configType: 'main' | 'preview' }
 ) {
   const properties = [];
 
   // Collect properties from named exports
   for (const [name, decl] of Object.entries(exportDecls)) {
+    // only include real preview exports to definePreview factory
+    if (options.configType === 'preview' && !projectAnnotationNames.includes(name)) {
+      continue;
+    }
     if (t.isVariableDeclarator(decl) && decl.init) {
       properties.push(t.objectProperty(t.identifier(name), decl.init));
     } else if (t.isFunctionDeclaration(decl)) {