David:
Your response is appreciated, and, explains the intersection group numbering clearly, while in a 2D mode. This is useful, of course, in certain circumstances for plan delineation.
Our issue concerns the 3 Dimensional planes, where the Layer Intersection Group number seems not to apply.
Please see screenshot that illustrates our finding to date, and looking for other "fixes" / "comments" / "confirmations", if they exist, to explain graphic procedural requirements.
Michael |:-)
AC 4.5 - 19 Build 3003 Full USA
Mac OSX 10.10