In the Finalize step of the Form creation process you will find the ability to export the form's code so that you can host that form on a web page. If you use the form publishing method, a code snippet of the form should be exported and hosted on an external web page. When hosted, the code references the most recent version of the form in Assets.
You may have discovered that the code snippet file that is exported is blank. This is expected behavior because the snippet does not contain any of the form's HTML design. Only when the code snippet is hosted on a web page can it reference the most recent version of the form in Assets.