Hard to suggest workarounds without knowing more about your file, however, in addition to what hansmex writes, maybe you could copy (temporarily in a copy work file) the elements from one level to another and then do the 2D print? This may be tricky with a very complicated file, but could work if you clean out all unnecessary elements before printing the plan. For a top view plan in 2D, the elevation may not matter. But of course, do make sure to keep the original file in a safe place before ruining it.

ok

PS - for printing the plan or exporting SVG - it is often a good idea to clean the plan as much as possible (in a work-copy).