Edited Issue: Designer: Consider removing facet propagation feature [642]

This feature was added in EF Designer for VS 2012, but it turns out the implementation only works for SQL Server. We need to improve our understanding of the effects of removing it and consider alternative approaches.

This related to issue http://entityframework.codeplex.com/workitem/521, which we will use to track porting the limited fix we did for EF Designer for VS2012.