Hi all!
This is my repost of my original post, which you can read here:
This automation solves the problem of calculating the sum of the original estimate of all issue types of an epic, without the use of an addon. Keep in mind that I had 4 different issue types (standard tasks) from which I wanted to sum up all original estimates and not story points.
Rule
Below you will find my rule, which after testing it, it works like a charm:

So what the above rule does is that
- Step 1: It tracks changes on Time Tracking
- Step 2: Rule keeps going only if the trigger issue type is specific
- Step 3: Get the original estimate value of the trigger issue and copy it on the Story Point field
- Step 4: Create a branch for the parent of these issue types
- Step 5: Looks up to find all issues with the parent Epic Link
- Step 6: Sums up the story points of the Epic's children and copy it on the Original Estimate field
Rule Break Down
Below you will find each individual rule component.
Step 3

{{issue.fields.timetracking.originalEstimateSeconds.divide(60)}}Step 5

{{lookupIssues.Story Points.sum}}Ending Note
I though to end this article by presenting to you the pros and cons of this rule:
Pros
Cons
- Uses an extra field (story points) to do the copy/paste thus,
- This rule takes 3 to 4 seconds in duration (which I think is significant)
- Makes Story Point field obsolete, since it is used in the calculation, thus,
- You can't use any chart that uses story point
Cheers,
Alex