In an earlier project we include a time estimate in the "Original Estimate" field and the Burn down chart works perfectly.
In a newer project (created the same way) we are also including a time estimate in the "Original Estimate" field. However when we start a sprint a warning comes up to say something like "these issues do not have a value in the 'Estimate' field". I assume this is also why the burn down chart does not work. I can't even see any "Estimate" field.
What has changed?
Do we have to re-configure Jira to use the Original Estimate field?