Revit :: Can't See Furniture In Plan

I made the building, and after I had to change the elevation levels, and after I did this, I copyed some furniture from the level 1, to the level 2. Some of the furniture was copyed the right way, but all the chairs from the plan are missing. I tought maybe they've been deletel, but I try put new chairs, and they also don't appear in the second level only. When I went to 3D view, i saw there are there, at the right level where they should be. I dont know why they don't appear in plan. And also I noticed the interior walls are grey, and not white in the plan. Also, when I go to ground  floor, and put underlay level 1, I see the chairs there in the underlay, not at level 2. I made this print screen maybe is easyer to understand. [URL]