Typo3 copying IRRE child records -

I want to make a copy of such a custom record, which contains a record of some children who also have children themselves, -I make the architecture in Tipo 3 with the IERR.

How can I copy the original record and all the children, with copy I mean that they also make new child records and set them as children from parents.

Now the references to the original record are set during a copy of a record but this is not the behavior that I have to do!

You must write a custom code to support this I fear. You can hook into TCMMIN, but you may need to create a custom action for it.