Creating a new form whilst retaining data from the old form

First, you'll need to create a new version of the form via our import/export feature. Guidance on this feature can be found here. 

The imported form can be identified by the date created column and will appear as unpublished.

Once the new form has been imported you can make any changes before publishing and assigning to your learners.

If you wish to retain the data from the old version of the form, simply unassign from your learners, but ensure the form is kept published.