FMC is Dumping all Data

[phoenixphire 50]

Guys, over the last few flights my CDU is dumping all of its data after input. I then have to input all of the data again. The LDS 767 used to do this before an SP. Anyone else having this problem?

[Mean Aerodynamic Chord 269]

Nope. What exactly are you seeing? Is there an error message, or does it just bring you to the "home page" that has the PMDG Setup button, FS Actions, FMC, etc.?

[phoenixphire 50]

Nope. What exactly are you seeing? Is there an error message, or does it just bring you to the "home page" that has the PMDG Setup button, FS Actions, FMC, etc.?

Nothing, what ever page that I am on, usually the legs page for take off. ALl the data is gone completely including the PERF and TAKEOFF info

[Mean Aerodynamic Chord 269]

Does it suddenly disappear or when you go to another page? I would submit a ticket to PMDG, then reinstall the plane. Try setting up a flight on a PMDG house livery.