I had several projects (team and company) that had Epics with 2 custom fields and an automation set up to update them: Current Update and Prior Update. We run a little automation where if we type "Update:" in the comments the "Current Update" field is filled with the update and if we post another comment with "Update:" the Prior Update field gets updated with whatever was once in the current update field.
This worked for ~ 6 months but mysteriously this morning it stopped working across all projects despite no changes being made to the automation/custom fields/projects.
I am curious if something changed to invalidate the jql we have? But it basically just started saying that the fields are invalid when they are not and have been used for months... It even worked as of just yesterday! We use the update automation a lot so its definitely a sudden change. 



Automation Rules: