Making a copy of a FeinCMS page tree using django-mptt changes child order -

i'm trying make copy of feincms page tree, managed using django-mptt. wrote function:

def make_tree_copy(page, parent=none):     '''     makes copy of tree starting @ "page", reparenting "parent"     '''     new_page = page.objects.create_copy(page)     new_page.save()     page.tree.move_node(new_page, parent)      # re-read django-mptt fields updated     new_page = page.objects.get(id=new_page.id)     child in page.get_children():         # re-read django-mptt fields updated         child = page.objects.get(id=child.id)         make_tree_copy(child, new_page) 

and call using

make_tree_copy(page.tree.root_nodes()[0]) 

it works in general when have page tree looking this:

a |- b    |- c    |- d 

it comes out this:

a |- b    |- d    |- c 

from stepping through mptt code, magic seems happen in mptt/managers.py/_inter_tree_move_and_close_gap(), reason "lft" values of grandchildren changed. before move c=3, d=5, afterwards c=5, d=3.

which explains why d gets sorted before c have no idea why these values switched. thoughts?

ok, knew once ask - i'd find answer myself (after spending hours before...) of course it's same problem in other django-mptt problems on stackoverflow: have re-read object database.

i did in snippet above @ wrong places. code works (re-reading parent on entering recursive function):

def make_tree_copy(page, parent=none):     '''     makes copy of tree starting @ "page", reparenting "parent"     '''     if parent:         # re-read django-mptt fields updated         parent = page.objects.get(id=parent.id)      new_page = page.objects.create_copy(page)     new_page.save()     page.tree.move_node(new_page, parent)      child in page.get_children():         make_tree_copy(child, new_page)