In Plotmaker go to PREFERENCES menu > DRAWING ATTRIBUTES and untick the LAYER box.
If this is ticked then the plotmaker view will remain as it was when you first imported it and you are unable to change layers in it yourself.
Turn it off and you should be able to change layers to your hearts content (it will have the same layers and combinations as in Archicad).
Or as you mentioned delete the view and re-import it.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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