This is how you migrate your Sony Vegas Pro Windows Layouts to VEGAS Pro 14.0:
In Windows:
Copy your *.VegasWindowLayout files from:
%APPDATA%\Sony\Vegas Pro\13.0 (or 12.0 etc.)
to
%APPDATA%\VEGAS Pro\14.0
Then In VEGAS Pro 14.0:
(1) Choose View | Windows Layouts | Organize Layouts... (All of the layouts you copied will show up in the list on the left...)
(2) Press the "Assign ->" button to assign these to the <EMPTY> layouts in the right column
(3) Press OK
(Thanks JohnnyRoy for the guidance)