Jeffrey Caso I find myself spending a few extra seconds at the Mill Preview screen these days. Setting yourself up here will save time later, and being more accurate with your sprue placement will make your perfect contacts remain that way. It is really simple, using good magnification, to remove the sprue completely and accurately from the contact area, but why even have to do that if you can be more precise in its position in the first place.
At the Mill Preview screen, it helps to go to Display Objects and turn on the model of the arch where the restoration is located. This will show you exactly where the contact is located. You can then position the sprue where it will not interfere. Just a little tip to make your CEREC life a bit easier.
