Interesting Martin Your example mostly demonstrates one level of offset, but it goes to two levels bottom-left (to blue to purple), and apparently three levels at the bottom (to green to blue to dark blue). However looking closely it seems that the map-connection line to blue goes directly from yellow (ie not from green). If this is the case there are two scenarios: Scenario 1 - based on the map-connection line I have highlighted, both the green and blue are first-level offsets. I may be mistaken as the image is not sufficiently clear. If it is two levels of offset, then that is not sufficient to trigger the 'bug' David and I have described. If it is three levels of offset, then you have somehow managed to avoid the 'bug' and the map-connection lines/points are coincidentally on the same alignment. Scenario 2 - is that this example demonstrates the 'bug' described, if not particularly clearly. My synopsis of the bug was "the line created by point map-connection is only correctly originating from its parent map at the most deeply nested level of offset and at the 1st level offset. At all other (intermediate) offset levels, the map-connection line reverts to originating from the top-level map, and not from its direct parent." So Martin, if you could perhaps clarify. I suggest adding a horizontal component to the light blue map in my snip above, and confirming whether the map offsets are two or three level. If it is two level, it does not test the bug. If it is three level and there is no 'bug', the map connection line, blue to dark blue, should radiate from blue and not from yellow. Tarquin I'll respond to your message later - off to work now! Thanks Bruce From: Therion <therion-bounces@speleo.sk> On Behalf Of Martin Sluka via Therion Sent: Wednesday, 15 March 2023 23:08 To: List for Therion users <therion@speleo.sk> Cc: Martin Sluka <martinsluka@mac.com> Subject: Re: [Therion] 2 Map-connection issue - Going to four levels - Offset tests SAMD-ITF-IS example Just a sample. Colorised by altitude. M.