Change of style and lineage in layout

so I have sent my rendered floor plan to layout…but I need to have the layout plan black and white…but when I change the styles to do this… some of the furniture disappears?? they only one that works is photo modelling but my tutor wants black lines for walls and grey for furniture??? what do I do what have I done wrong!!!

I expect it’s something simple enough to fix. Can you share the LayOut file so we can see exactly what you’ve got going on? If you don’t want to share it publicly, send it to me in a PM by clicking on my name. If it’s larger than 3 Mb, upload it to Drop Box and share the link.