Hi @Matt Bryan and welcome!
There are a couple of ways to go about this.
1. If it's simple and you know what you did:
Re-edit to undo the change and republish. All projects will be re-affected but you're back to where you were.
2. If it's not simple but you made a backup when you published.
Switch the workflow in the default workflow scheme to the backup.
3. If it's not simple and you didn't make a backup
Stand up a temporary instance of Jira (matching version, etc.) and export the default workflow, then import it into your Jira instance and do #2 above.
Or, side-by-side compare the "broken" one with the default from the temp instance and do #1 above.
These are pretty terse instructions so feel free to ask questions but I didn't want to write a novel for you when all you might need were some concepts and pointers.
Hope this helps and if so, please consider clicking the "Accept Answer" button so others benefit from the "answered" flag on their search results. Thanks!
~~Larry Brock
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.