Using dynamic form rules with Kanban boards

I have a dynamic form rule that fills a DATE STARTED date field when a multiple-choice field is set to "In Progress" and a DATE COMPLETED date field is filled when the status is changed to "DONE".

I have a Kanban report that shows cards organized into columns using the Status field. 

When I drag a card from, for example, IN PROGRESS to DONE, the DATE COMPLETED field is not updated. 

How can I have a change in the status field update a date field when changing it by moving it via a Kanban report?