Copy all subtasks from most recent UserStory issue into newly created UserStory issue

[Devendra Patidar]

 I am creating "User Story" issue type from one of the transition of another issue type "User Story Cluster" using groovy script post function. New issue "User Story" is getting created after executing the transition.

I want to Copy all subtasks from most recent "User Story" issue created in project into newly created User Story issue using same transition.

Is someone implemented similar functionality and can help here?.

Thanks in advance.

BR,

Devendra