To fix what we do is…
Open 3D window of selected objects you wish to save, as per normal… Then press ‘Control Alt and A’ or open ‘filter and cut elements in 3d’ panel. Then select limited view, doesn’t matter what stories are selected. click ok. once generated 3d window appears go back to panel and switch back to infinite, and regenerate 3d window.
Once you have done the above and you now save as 3ds, the geometry saved will be the same as per the 3d window.
This also works the other way if you only want to save limited stories… click infinite, generate 3d window and the click back to limited and click save… All sorted.
I hope this helps
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