I have a revision cloud that I use that was created as a symbol. When I
insert that symbol into a drawing and place it over any part of the drawing
that contains dimensions, the dimension lines and extension lines disappear.
The dimension value and the arrows are still visble. Is it supposed to work
this way? I don't recall seeing this in earlier versions, but I don't use
revision clouds very often, so it could be I just never ran across this
before.