can i move submissions from one form to another

we had registrants from a previous event/form that I would like to move to a current event/form - how would I do that?

The only way to copy data from one form to another form is to export the submission and import it to the other.

You can see our users guide to export submission, How to Export Form Data to Excel.

You may use our import app, http://import.jotform.io/. You see more detail of this app from our users guide, Import App Easily import your Excel or CSV data into JotForm.