every time i open a drawing all the piping that was connected to equipment is now disconnected (tear drop shows). i use PlantConnectJoint and reconnect everything, save, and close. reopen the drawing and everything is disconnected again!!!
Have you applied the new Plant 3D 2013 SP1 Data Integrity Hotfix? The issue you are having seems to be addressed in this hotfix.
I would encourge you to try again the update again. However, the link I sent you is for a very recent hotfix and I am sure this is not the same one you installed last time.
I have the same problem,
I have created isometrics, all references to equipment and connecting piping and the fasteners where good.
Now i open the plantdrawing again and all connections to the (xref) equipment are diconnected,
i have the latest SP installed (2013)
Even blindflanges on the equipment are disconnected.
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