Since WooThumbs v4.6.8 it is possible to maintain the parent product image gallery for your variations. This means you can keep the parent product image gallery when a variation is chosen.
- Assign images to your parent product.
- Assign one or more images to your product variations.
- In the product edit screen, go to the WooThumbs tab.
- Click Maintain Gallery?.
- Update your product.
- Now when you select a variation, the main product’s gallery will be displayed alongside your variation images.