I suspect it's tripping up on the OrderItemStatus. There is no way the formValues can contain the necessary OrderItem object, and thus the call to UpdateModel cannot possibly update it correctly. Perhaps it's setting it to null and orphaning an OrderItemStatus object in the process.
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.