Custom fields expire independent of event registration expiration.
It is common when holding events to have the purchase or ordering of some aspects of an event to close before overall registration of the event. For example, we offer T-shirts to be ordered with each registration, but the T-shirt orders must be submitted to our vendor two weeks prior to the event. Another example are tickets for our banquet. It would be very helpful if we could set an expiration date for custom fields that is separate from the expiration of the overall registration. Thanks