My requirement  is to maintain hierarchy from Project A to Project B

I have project A in which i have version , epic , story

      - In Specific version - i have number of story ,

      - In Specific Epic - i have number story

      - in  Specific story i have number of sub task 

So in similar way i want to sync the Project A with Project B in Jira

(Right now Project B is blank)

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What i did is like , I used the trigger  and tried to bulk exalate . So in this case all issue reflected to Project B .

But hierarchy is not maintained . So what shoul i do it maintain it .

Ans also what if i sync versions from  Jira project A to Project B  ?? it will automatically sycn Story , sub task . which are internally linked in project A   ????