Hello,
I got some archicad files from a client who had someone else working on a project but they went into labor so she needed someone else to take on the task.
The other drafter uses AC16 whereas I am using AC21.
When changing some of the mark-ups she gave me, some of my interior elevations that were previously normal have turned black/grey changed colours in general.
I attached a zoomed out picture of a few sheets with the issue.
I have no clue what caused this and any help would be greatly appreciated.
Thanks.