Edit SurveyRecord model to not make use of different Survey property for each subclass. This does mean that a simple query needs to be constructed by hand whenever you want to query for every SurveyRecord for a specific Survey. However the naming is now the same over each SurveyRecord and it fits well into the rest of the design of Melange.

A list of bugs is available in the Google App Engine SDK project on Google Code.

The issue tracker is at http://code.google.com/p/googleappengine/issues/.