Upgrade from MSc by Research

M

Does anyone know / have been through the upgrade route from Part time MSc by research to PHd. I am currently registered on an MSc by research with the aim of upgrading to complete a PHd, my question is how does the write up process differ. If I were on the MPhil route I think at the point of upgrade I would have to have completed a portion of the write up ( about 10000 words as I'm lead to believe) and this would be sometime after the 2nd year. By this time on the MSc route I should be looking at being pretty much finished the write up (or certainly on the way). Do I have to work at the write as though I was going to complete the MSc and then expand on what I have written during the PHd or do I aim to have the 10,000 word "portion" of the write up completed and hope the upgrade is successful.
Any advise from someone who has gone/ going through this process would be gratefully received.
Max
:-)

13777