Do I need to keep a copy of my application and any other information I send to the MMMP?

Yes. If your application has not yet been approved, denied or terminated you may provide law enforcement with a copy of your written documentation submitted to the department; you must also submit proof of the date of mailing or other transmission of the documentation. This documentation shall have the same legal effect as a registry identification card, until such time as you receive your card or you have received notification that your application has been approved, denied or terminated.