- In Composer click the Inventory button in the left hand menu, then the Import tab.
- Import the product from the list displayed, and import it as a Single Product.
- Click on the Modifiers tab.
- All un-imported modifiers will be visible in this list, you can import some or all of them using the checkboxes.
- Once you have selected the modifiers you with to import, click on either the Import button on the right of those modifiers, or on the Import Selected button.
- In the Import Modifiers dialog box that opens ensure that Add-on is selected from the drop down box and click Import Selected.
- Your products and Modifiers are now successfully imported into Composer.