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I'm using code first and can add records without a problem. The database is created properly and is seeded without any problems. But calling SaveChanges() in my Edit action only updates the entity, not any of the navigation or reference properties. A simplified version of my model: public class Contact : IMyBaseObject { public Contact() { this.Delete = false; this.ContactTypes = new HashSet<ContactType>(); } public int Id {get; set;} public string Name {get;set;} public bool Delete {get;set;} public virtual ICollection<ContactType> ContactTypes { get; set; } public virtual USState USState { get; set; } } public class ContactType : MyBaseObject { public ContactType() { } public int Id {get; set;} public string Name {get;set;} public virtual ICollection<Contact> Contacts {get;set;} } public abstract class Territory : MyBaseObject { public int Id {get; set;} public string Name {get;set;} public string Code {get;set;} } public class USState : Territory { public USState() { } // Navigation properties public virtual ICollection<Contact> Contacts { get; set; } } I won't include the code, but I do have some custom model binding going on. My Edit action (using MVC 3) was not being populated with the ContactType or USState properties. The binding is properly returning a fully populated Contact object with the correct values from the form. If I understand EF 4.1 properly, I should only have to do the following to persist changes to the database when saving my Contact object: if(ModelState.IsValid) { context.Entry(contact).State = EntryState.Modified; context.SaveChanges(); } However, only primitive properties are being updated when I do that. I have left out a few things in the above example: I'm using a transaction, a try catch block, and check

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