[cgma-dev] Observer question?

[David Thompson]

Hi all,

I'm relatively new to CGM and have a question about the entity reference lifecycle. Specifically, what are the circumstances where they become invalid? For instance, are FaceRefs obtained before a webcut valid afterward as long as they did not intersect the sheet used to cut the model?

If not, does the observer mechanism provide enough information for me to obtain a new FaceRef for the same (un-cut) face?

	Thanks,
	David