How to transfer data by writing it as a string, not as an ID?

Question

Django

Refactored the code. Almost all tables, after refactoring, were transferred correctly, but there were problems with the remaining ones.
old.pyramid_treenode.living_address_id stores the ID of the address from old.pyramid_address.
You need to take this address and write it as a string (not an ID) in new.pyramid_treenode.living_address
How to implement this request? I have never come across requests of this nature before.