I work with EF 4 (not with Self-tracking entities currently). I\'ve added some columns (non of them is a key and all of the are nullable) to one of my entities, and got the
So if you want to create the csdl, ssdl amd msl files, do the following:
Metadata Artifact Process select Embed in Output Assembly.Done and done, the files will appear in Debug\edmxResourcesToEmbed under obj or obj\x86, depends on your build definitions.
I'm sorry if this seems to simple to explain, but I was in need for those instructions (msdn was not a great help) and I hope it might help others.