In 2011 the pipe network cross section labels had to be exploded or they would disappear once you closed the drawing (even with saving).
In 2012 can you close and open a drawing and have the labels not disappear?
Still not fixed... Has this not been brought up to the dev team? Maybe it works as desired. If so let me know.
Seems when we explode labels they are no longer dynamic. Autodesk, do you have a workaround for when the pipes move and I have a bunch of mislabeled objects but everyone thinks they have dynamically updated.
Bangin my head trying to figure out how the heck my labels keep dissappearing.....