Hey,
 
Need to change the linetype of leaders in ALL .ipn file, at once, if possible from boring solid lines to phantom lines.
 
How do I do this?
 
Suggestions?
 
Thanks in advance.

Nobody has EVER done this before???

Just to follow up, I have discovered you CANNOT change the linetype of trails in an IPN file. You CAN however, change the appearence in the dwg invironment by clicking manage, styles editor, on left side...expand layes. highlight tweak trail. under linetype, select what you like :)