Rails - Sep 2006 - Acts as tree and list?

Does anyone have any experience using acts as tree and acts as list
together?  My model looks like
class ModelName < ActiveRecord::Base
  acts_as_tree :order => "position"
  acts_as_list :scope => :parent
end

the table has fields
  position, :integer
  parent_id, :integer

This kinda of seems to work.  Except if I do something like
@modelinstance.children.first.move_lower    #parent_id = 0

But now
@modelinstance.children.first.position = 1 # which is correct now, it
used to be 0
@modelinstance.children.second.position = 1 # bad, can''t have to things
with same position

Any tips for the right way to do this?
Thanks


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So it looks like I need to force a reload of all the children and
things are fine.


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