EF detect changes in detached object graph by ObjectContext

Question

Is exists way to detect changes in one object graph comparing it this another object graph.

For example:

usersSourceGraph = ObjectContext.Users.Where("bla bla bla");
userGraph = GetUsersGraph() // come from another tier and detached from ObjectContext.

I need way of setting userGraph states in (Modified,New) comparing with usersSourceGraph.

Answer 1

You must do it manually. There is no support in EF for merging two object graphs.