Honestly you don't have many options - sorry!
1: We've had some luck outsourcing the task of copying the design into Upverter, but its error prone.
2: You doing the job of remaking it will probably work better - but it will take you a bunch of time and be a shitty experience.
3: The upverter import format is pretty well documented - you could check it out. Its not super hard to write converters, but your problem s going to be reading the pulsonix format (its probably not documented).