combining lines in a drawing

I have a program that exports the attached file (see sample2.cmx) to be used with coreldraw.  After I import the file into coreldraw I can make any changes and send the final product over to my cnc machine.  The problem is that the exported files never have the lines "connected" and therefore the cnc machines does each line individually (in random order it seems) until it's done and this takes forever.  Is there a way in coreldraw to take this file and make it one solid line.  I realize that it technically is one line as it is but it doesn't draw it as one line, it seems to chose nodes at random and then draw from that node to the next, and then go to another random node.

Sample2.cmx