Thanks for the tip Carl, it's exactly what I ended up using to make my edits. -----Original Message----- From: Musetti, Carl [mailto:cmusetti@xxxxxxxxxxxxxxxx] Sent: Thursday, April 07, 2005 12:25 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Re: Diff Pair Unassign Andrew, You can open constraint manager opening up the differential pair routing worksheet, expand the design and all diff pair will show up with a plus mark on the names they should be at the top of the sheet and you can easily select them all by LMB clicking on the 1st then go to the last and shift LMB click and you will have them all selected. The click the RMB and you will see an option to delete this will delete all of the diff pair memberships in the design. Carl -----Original Message----- From: Andrew Noonan [mailto:andrew@xxxxxxxxxxx] Sent: Thursday, April 07, 2005 2:14 PM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Diff Pair Unassign In release 15.2, is there any way to globally unassign Diff_Pairs? I have hundreds that I want to regenerate automatically using Logic>Assign_DIFFERENTIAL_PAIR. It's a great tool for assigning automatically, but unassigning is a different story. Also, with the new net types, there's no DIFF_PAIR property on the net. Thanks, Andrew Noonan Sr. PCB Designer Topspin Communications (w)650-316-3398 (c)650-814-3677