I have EPIC issue-type & EPICWorkflow.

- Here there are 2 issues in EPIC are created from the above two marked transition.
- The fields are distributed as below. When Stories are created then the related values are synchronized from EPIC to that child story.
EPIC Story1 Story2
CF1 CF3 CF1
CF2 CF5 CF2
CF3 CF6 CF3
CF4 CF6
CF5
CF6
My requirement is:
If i will change the field values in stories & save it, then the corresponding field values of Stories & EPIC are changing accordingly.
Example:
Here if i will change the CF3 & CF6 in Story1 then the same field's values should updated in the EPIC & Story2 as well.
So if anyone can suggest, please reply.