To All,

How are the work planes, in a assembly, turned off through ALL uses in other assemblies?

for instance, you make a pressure vessel, valves, and piping and make a sub-assembly of these parts. You use work planes to place the valves and piping.

when completed, you turn off planes. now you take this sub-assembly and place it in another assembly - the work planes are now on and visible, WHY

thanks,
PerDiem856