Basically my husband was on the laptop and I was on my iPad. I went as far as selecting the resort, number of nights etc, and he went as far as pressing the cancel button. As soon as he pressed cancel, I pressed book, simple as that
This is not the correct Two Browser Method and risks losing both reservations!!!!
One of you has to start the new reservation and get all the way to where you would need to borrow points. You click on the borrow points window and pause. DO NOT ACTUALLY BORROW POINTS. Now In the second browser you cancel your old reservation. Back to the new reservation, press cancel in the borrow points page. This should return you to the original reservation screen and you should see your points from the cancelled reservation now available. Continue to book as normal.