I found this thread helpful at automating the "cloning" of Epics with Child Issues, however it does not pull in the Subtasks of those Child Issues.
There was also a question in that very thread about the same thing but that specific part was NOT answered.
This is what I have thus far. I tried to add another branch for cloning subtasks, since it doesn't seem to allow another "For" loop there, but I cannot add a branch WITHIN the prior branch (doesn't seem to like complex logic!).

Please help!
EDIT: To be absolutely clear, the desired functionality is this:
1/ Manually run automation rule inside Epic on Project ABC.
2/ Epic AND Child Issues AND Subtasks are cloned to same Project ABC.
[3/ Then I will manually move the Epic AND Child Issues AND Subtasks to Project XYZ, unless that can be automated too..]