We use respond.io to sell English courses. We have long workflows that send multiple automatic reminders to customers to complete assessments. Assessments are necessary to enroll into the course. Workflow can take up to 3 days. Right now it's impossible to change workflow because there are always contacts in this workflow. We do have shorter workflows as well, and still there is a risk that you eject someone when you stop them and they will be left in undetermined state.

1) Please at least update warning message on Stop button to show number of contacts in the workflow at the moment. This will partly solve issues for shorter workflows.

2) Please allow workflow versioning to support longer workflows.