All beams and columns dislocated when reopened the Revit File

[asadkamalabbasi]

Hi, I have been working on a project. It is timber framing project so everything here is made up of beams.

I saved the file yesterday. It was all fine. But when I opened it today, all of its beams and columns were dislocated. Beams have different angles and there's a chaos in the project like it was hit by a thunderstorm. (Screenshot attached)

Please suggest what could have gone wrong as this is the second time that this has happened. It happened yesterday to my another team member working on a different PC and a different template file.

If the issue cannot be resolved, it would be great if anyone could suggest how to stop this from happening again in future as this wastes one to two days of our hardwork.

P.S. All the backup files that are created when we save the project, have the same issue. I have set the limit of backup files to 4. And all 4 of them have the same problem which is more weird. 

Regards

[ennujozlagam]

retrieve your backup files to recover or check your levels could be accidentally move. thanks

[asadkamalabbasi]

All backup files have the same issue

[XXalessio.amodioXX]

Try to select the beam>Right click on blue dot>Disallow join. See if it works

[martijn_pater]

Is it a workshared project? Maybe you could roll it back...

[barthbradley]

Post the file.