How can I correctly attach record object to data context in Entity Framework?

I recommend change your design and have ONE context at a time. (Based on your project type this could vary. Usually in web apps it's one context per http request.).

I have come to the conclusion that it's best (i.e. Easier to avoid problems) to use ApplyCurrentValues instead of attaching. That is because when you call Attach there are several things going on that we don't know about, but which may surface in one way or the other through an exception.

I prefer to do things the way I have control over what is done.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.