in the MemberData Editor it is possible to view the _memberdata.xml in a read only mode. In one of my classes it contains entries, which are not valid anymore. How can I get rid of them?

I am almost finished with a replacement for the native edit property/method dialog - one of the things it does is to delete the associated member data when you delete a property or method.

I will e-mail you a copy of it when I have it finished if you like.