ActiveRecord::Base#changed returns empty when attribute set during after_create

This is an abstracted version of my actual problem, but it reproduces in the same way.

I have a model:

class MultiSave < ActiveRecord::Base
	
	after_create :overwrite_id_dependant
	
	def overwrite_id_dependant
		write_attribute(:id_dependant, id * 5)
	end
	
	def name=(value)
		write_attribute :name, value
		write_attribute :name_dependant, value + " rocks"
	end
end

When I run it using script/server I get the following results

Loading development environment (Rails 2.2.2)
>> m = MultiSave.new(:name => 'slurm')
=> #<MultiSave id: nil, id_dependant: nil, name: "slurm", name_dependant: "slurm rocks", created_at: nil, updated_at: nil>
>> m
=> #<MultiSave id: nil, id_dependant: nil, name: "slurm", name_dependant: "slurm rocks", created_at: nil, updated_at: nil>
>> m.changed
=> ["name", "name_dependant"]
>> m.save!
=> true
>> m
=> #<MultiSave id: 11, id_dependant: 55, name: "slurm", name_dependant: "slurm rocks", created_at: "2009-02-16 00:42:34", updated_at: "2009-02-16 00:42:34">
>> m.changed
=> []
>> m.save!
=> true
>> m2 = MultiSave.find(11)
=> #<MultiSave id: 11, id_dependant: nil, name: "slurm", name_dependant: "slurm rocks", created_at: "2009-02-16 00:42:34", updated_at: "2009-02-16 00:42:34">

I have attached the rails project to this bug.  It exhibits the save behavior if you change to model to use after_save.