It is possible to break DEFINITIVELY the link of a data sharing feature with the source model (copy geom, inheritance...).
In CREO3 this possibility has been added in the feature option #NO Dependency
The users in CREO2 now often switch off the button #Dependent to create a non dependent feature, in CREO3 corresponding to #Manual update: in Creo3 they will naturaly choose #NO Dependency instead of#Manual update...and they will say OK at the warning window !
If the option #NO Dependency is selected the user can't change it after the fearture creation: there is no #Edit Definition now !
Please change this option name to avoid user mistakes: "ULTIMATE BREAK DOWN" for example (« RUPTURE DEFINITIVE » in french)
and if possible, change the icon in the model tree for this "dead" data sharing feature...