speaking from my experience with the EDD put forward...
DD was EDD from LMP 11th july at the 18 week scan her thigh? bone was measured and they put it forward 1 week (which 2 me didnt make sense) she ended up being born on her original due date! she was a long baby, little signs of overcooking but weve since learnt she has a dry skin condition so it could have been that.. since you were charting, how can they just dismiss that information??!! grr