Ling, thank you
I looked up intersection & see the reference info now
if i can follow up with you...
these elements organizationally belong to the same group (painted wood trim) for the purposes of understanding the construction.
[and I see that I must separate them somehow to divorce the interactivity for the purposes of archicad operability]
i don't want to set the trim layer to 0 interaction because I still need auto-intersections for other trim
and it appears this setting isn't an object level setting
what do experienced people do to track these conditions? multiple trim layers?
if i'm understanding the alternate option you suggested...are you suggesting it would be enough to make the reference lines in "opposite" corners from each other. [these two elements do need to touch]
thanks for you help!
[edit to add] i'm just seeing that interaction numbers change based on the layer combinations...so i'm back to confused on the best way forward...
mac ACv26/4034, US solo, Ventura 13.1, 2020 iMac