If a form is linked to a selection or application process which you then archive, this should have no affect on your live processes – candidates will still be able to apply for a role and you’ll still be able to move candidates through a process.

If at some point you wanted to edit the form, include this in a selection process elsewhere on the system, because the form has been archived, if you are actively searching for this in ‘current forms’, then you would be unable to select this.