I can confirm this does indeed seem to be a bug in version 21.
If the 'existing' elements are set to hide in the reno filter, then you will see nothing in the layout even if 'to be demolished' and 'new' are set to show.
I tested in 22 and it seems OK there.
The only solution I can think of is if you set up a reno filter that overrides all existing elements to white.
Then override the existing elements rather than hide them.
Only thing is this will mess up any other filters that use override for the existing elements.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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