Changing the module for email templates ('Leads' ► 'Contacts')

Changing the module for email templates ('Leads' ► 'Contacts')

How can you copy an email template and change the module to which it applies?

I have created a few email templates for 'Leads' which I would like to copy (and edit) and use for 'Contacts'. After searching and fiddling around for a long time I can't find a way to do this!

Thank you very much for your feedback!