table-per-concrete-type

Entity Framework 4.0 Creating a new entity derived from other entities

I currently have a complex entity relationship setup based on my data structure in sql server 2008. What I'm trying to do I would think would be ridiculously simple but I'm pulling my hair out and have spent days trying to figure it out. I have an Address and AddressType table which are joined on addressTypeID. There are 2 AddressType...