When there are contacts running through a workflow i.e. "active runs" they can't all be stopped at the same time, and even when a workflow is stopped, as well as archived (since it's not possible to delete workflows) the contacts who are already in the workflow will continue to work through it and the only way to stop these "active runs" is to manually remove each individual active run one at a time which, in the case of hundreds of active runs, takes hours.
It would be great if there was a feature which allowed you to either:
1) Categorise these active runs under the contact filters and do a bulk action to stop them from running in the workflow, or
2) Be able to select all active runs through the "active runs" tab in the workflow and stop them from running that way.