Bulk Editing / Copying product Variants and Prices on Already Published Products

[salklop]

Hello!

I have custom artwork in my shop with different print/canvas variant types.   Some of my options and prices have changed, and I need to update the current products.    I created a new artwork with the current variants and prices but I am looking for a way to either copy those variants/prices over to my other existing products, or find a way to bulk edit the prices/variants on multiple existing products.    Please tell me there is a simple way to do this, other than going into EVERY existing product and manually changing over the variants and pricing updates. 

Thank you!