I'm finding that the legacy rounds (pre-Creo 3) in my models do not have the ability to utilize the Chordal enhancement. New rounds created with Creo 3 have the option, however if I try to edit any old rounds the Chordal click box is grayed out. Working to product specifications, or can I turn on a config option or some other solution? Other than re-creating each old round in Creo 3, of course?
I'm trying to edit some old data (Creo 2, not that old really), and the rounds fail with the new dimensions. However if I create a brand new round with Creo 3 - same edges, same surfaces - the round solves itself. Maybe this isn't a Chordal function problem necessarily, but that's the only difference that I can see between the old/failing and new/working features.