Hi all! We are migrating Shopify Scripts to Shopify Functions. We have the following case:
We have a product in the cart with different quantities. We want to split this product into groups of 3 items each. Previously, we used cart.line_items.insert in the script. Now, the most suitable approach is the Cart Transform function, where we can create bundles of 3 items by merging line_items.
Is there any other way to modify this, or is Cart Transform the only option?
Hi @AndreyFourmeta 
Also see these discussions
https://community.shopify.dev/t/function-to-add-remove-products-from-cart/13443
https://github.com/Shopify/function-examples/discussions/213
In some scenerios notice the update function, only for stores on shopify Plus, lets you set the price,title, and image so could serve as a way to reframe an item in the checkout 
but notice this doesn’t change the actual items properties like SKU,etc.
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