There's no need for that.
I'd recommend warning them - if someone is in the middle of a transition (on a transition screen) and your new workflow changes or removes that transition, they could lose what they're putting in (commit will throw a nasty error), but you won't damage any data.
Workflow migration can be very heavy on the server though and this could affect your users - so, again, warn them!
Hey Atlassian Community! Today we are launching a bunch of customer stories about the amazing work teams, like Dropbox and Twilio, are doing with Jira. You can check out the stories here. The thi...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG