CorelDraw 7 - B-Spline question

Is it possible to turn a B-Spline curve into something else or break it apart ? 

I've done a fair bit of work tracing a topographical map with B-Spline, which worked great but I've come to divide the map up into 4 pieces and I can't figure out how to break the line or convert it to a normal line / curve into order to achieve that. 

Is it possible and how is it done please ?

Mike