Again maybe I am just able to interpret this from the perspective of my own therapy. I think transferring records shortchanges the whole process of building the therapeutic relationship. If when I started therapy, my T had a detailed background of my past experiences, behavior patterns, etc.. I think my progress might have gone a little smoother, she might not have done some of the things she did in the beginning that really set me off. However, I would also not have learned as much about how my interaction with others sometimes prevents me from being understood and ultimately getting what I want. For example for the first 4 months of therapy I denied and withheld a lot of key bits of information. This hampered my therapy and resulted in a lot of additional turmoil and suffering. I probably needed to experience this in order to recognize the need for at least trying to change this behavior.

Having to start from scratch makes building the therapeutic relationship more like what you have to do in real life. Maybe in some cases making the process easier is necessary. However in Mt.Dew's case, the sharing of records seems to have derailed the whole process. IMO