I recently worked on an assembly drawing that was fully populated with balloons, but everytime I open it up, a dialogue box opens and reads: "The following sheets contain drawing views which are out of date with their external model (s). Sheet1" after which all balloons vanished. What do I have to do to keep them from vanishing?
Thank you in advance for the help.
Message was edited by: Thai Tu
The problem was a corrupted drawing format. I copy the Isometric views into a new drawing format and bingo... All the balloons reappeared.