XY Plots and 3D Sketch

Does anybody know why a 3D sketch would be separated into multiple data sets for flow simulation on XY plots.  I have created a 3D sketch for the flow path and I would assume that the data set would give data along the length of the 3D sketch.  But for some reason it is split at some unknown point and I could not find any properties as to which segment is "line9" or any other.  I can modify the data set once exported to excel but one would have to guess as to how the 3D sketch is broken up.

SolidworksFlow Simulation