We have various valve symbols which we want to use for our valves under medium detail level. I have created the symbol, inserted it into the valve family, and set all of the visibility settings as required. The symbol works well and scales correctly with the view scale.
The problem is that symbols can only be placed in the floor plan / ref level. This means that when you insert the valve into a pipe, and then press the rotate button to rotate the valve allong the pipe axis, the valve symbol dissapears.
Having symbols that dissapear can be a dangerous thing. Does anyone know of a workaround?