Not sure what happened but I'm not able to draw 2D lines on my Reflected Ceiling Plan anymore.
(They show up on the floor plan view instead). This happens in my ArchiCAD 18 version.
I looked in RCP Model View Option and can't find it, do you know where the setting is so I can turn it back on?
ArchiCAD 18- 24
(expert in AutoCAD, novice in ArchiCAD)
Using ArchiCAD since Feb 2017 mostly for 2D, starting to learn 3D.
It's very possible, that problem you are described related to line category. 2D lines can be cut line, skin separation line or drafting line. So. Probably in RCP model view option skin separation lines are hidden - it works for composite walls but also hiding 2D lines with skin separation category.
Change line category to drafting line - and it should work.