emberjs/data — pull request #444 by sly7-7 (2012-10-29 15:28:21+00:00)
Title: RESTAdapter: call this.didSaveRecord on didDeleteRecord

This seems have been forgotten in the commit https://github.com/emberjs/data/commit/7ea66038d0f32668024860b1916e7596ad911ff1
As a result deleting a child did not result a clean parent :/