I would like the ability to convert existing Event Registrants to Events sponsors. We import our entired invitation list into the Event as "Invited" but as revenue comes in, if someone is "sponsoring" the gift, we have to delete their existing information, then add them back to the Event as a Sponsor. This is tedious because any Participant information from the Registrant record has to be copied/remembered, and re-entered on the Sponsorship Participant Record.