Creating new dataflow with existing code from dataset

Hi,

I constructed a dataset and visualizations in Power query editor of Power BI desktop. I uploaded the pbix file to Power BI Service. It works fine. I want to change this file to use a data flow instead. I was wondering is there an easy way to import the source M code I created to the dataflow instead of going to every table in editor and copying and pasting it to dataflow?

Thanks!

Jason