To and from dates are common to all address types. The to date specifies the date until which the address is valid, while the from date specifies the date from which the address is valid. The from date for an address is automatically set as the day the address is registered unless otherwise specified. To and from dates also allow the user to see at a glance a participant's previous address history.
When the to date of an address has passed, the application displays a message on the participant's address page which says that the end date of the primary address has passed.