To migrate your store's backend customizations from legacy scripts to new functions, you need to recreate the same logic that you had in your script using our function creator. If you need help replicating a functionality, feel free to send us an email. We would be glad to help.
Unfortunately, at the moment we do not have any bulk import or automatic transformer that can take a legacy script as input and create a function. You will need to manually create the function in SupaEasy.