after_save only fires on initial, not subsequent saves

[robj]

I am using rubygems version of MotionModel

(upgrading to master or rc1.0 I get date_parse errors (format is "2013-07-17T06:54:43Z" )

my after_save(sender) method includes put ''aftersave'

callback fires on initial save

(main)> p = Post.new
=> Post#87:0xc555430
(main)> p.save ;nil
aftersave
=> nil

callback does not fire on subsequent saves:

(main)> p = Post.last
=> Post#87:0xc555430
(main)> p.save ;nil
=> nil

(main)> p = Post.last
=> Post#87:0xc555430
(main)> p.body = 'xyz'
=> "xyz"
(main)> p.save ;nil
=> nil

[sxross]

Can you please provide a failing spec as a gist called after_save_issue_72_spec.rb so I can make sure this is regression tested?