I was hoping to buy some new gear from the site store today but when asked to enter my subscribers number it was rejected as not valid, I've emailed runners world to advise but it now seems that the prices on the site store have since gone up and I've missed out! Not happy!
I emailed them to query and they replied to say that transfers can be done on the day, deadline one hour before race start. You are correct though the transfer form does state Wednesday, I think this is preferential.