Interesting... I had tried the "Fanout by Pick" command at one point at another area of the board... I did not get a fanout and decided not to pursue experimentation with the "Fanout by Pick" command. I just tried to reproduce the problem with no success and I also did a search at SourceLink with no success. Are you able to use "Fanout by Pick"?... Just curious. Don.Kost@xxxxxxxxxxx Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx 05/19/2006 08:16 AM Please respond to icu-pcb-forum@xxxxxxxxxxxxx To icu-pcb-forum@xxxxxxxxxxxxx cc Subject [PCB_FORUM] Re: mysterious via shifting Ed, I've seen this problem occasionally when using "Fanout by Pick". Seems like it happens to some bga's but not all. Cadence was unable to reproduce this problem. Don ........................... Ed Caldwell <Ed.Caldwell@xxxxxxxxxx> Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx 05/19/2006 08:10 AM Please respond to icu-pcb-forum@xxxxxxxxxxxxx To icu-pcb-forum@xxxxxxxxxxxxx cc Subject [PCB_FORUM] mysterious via shifting Anyone experience a mysterious shifting of vias in Allegro 15.2 s126 (v15-2-51EU) (12/14/2005) i86... ? The design is in mils to 2 decimal places. The vias are in a 0.8 mm BGA (spaced at 31.50 mils apart). Somehow the group of vias within the rectangle pictured below shifted by 0.10 mils sometime during my edits - cause unknown... It is important to note that I did not change the database resolution - it has remained (mils to two decimal places). The only thing I changed was the routing grid which I switched between 25 mils, 5 mils and 0.1 mils as I was working in different areas of the layout and I was not working in the area where the vias shifted. Puzzl_Ed Ed Caldwell Electronic Design Services, LLC Canton, GA - USA