jimjim:
In the Wall's Settings dialog box, go to Floor Plan and Section > Floor Plan Display > Show on Stories, and set it to
Home Story Only. You will need to confirm that the Wall's Home Story is the correct one with the Home Story pop up in the Geometry and Positioning panel of the same dialog box.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David