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Originally Posted by Tristan Lall
In short, "never" is probably too strong, but if in doubt, you can still take the safer route, and modify the underlying model. With a little experience in choosing references, you shouldn't have too much trouble making a good decision.
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I know it's strong but, and this specifically for business purposes not FIRST, I find it makes people think much more about how they will make the part (in Pro/E and reality). This frequently works to eliminate these types of design choices. I don't like to let people get away with doing what is easier for them in a CPU rather than what works better on the assembly floor. These problems get magnified when you start using PDM, PRO/Intralink, or PDM/Link a a data vault. The fear is a change on a part has impacts down the line that someone is not fully aware of because they are only working on an individual part not the whole assembly. The impacts can become a configuration control nightmare.
My feeling is that if do not have an appreciation for the full implications of assembly cuts or features you should not use the function because of PRO/E's inherent parametric referencing. These problems all get magnified when you have multiple users working on assemblies and subassemblies who don't know how all the parts were modeled.
To sum up if you have multiple people using your models are don't realize the full extent of PRO/E's parametric referencing using this feature is a bad idea. If you're just trying to do a quick and dirty FIRST drawing with no configuration control it probably won hurt you.
Pete