After reviewing the Sketch document, we are ready for the big import. This step is the most important but is very simple. Because XD can open Sketch documents or automatically import design systems, we can get to a usable XD Library System in just a few seconds.
In this step, you have two choices. You can either simply open the Sketch document in XD, or, if you are already working on an existing XD document, you can open the assets panel, click “Link Assets” and then select “Convert Sketch Library…” The latter option will convert this Sketch document to XD in the background and automatically link these assets into your project to be ready for use.
After this step, you really are ready to begin using this design system in your projects as-is, but I’m going to share some following steps you can apply to clean up the design system and take advantage of the great design system features that made you want to migrate to XD in the first place.