As with all files in 12d Synergy, you can always view the history of a 12d Model Project. You can see who made a change, when and why.
1.1 Viewing History and Rollbacks
1.2 Viewing Access History
12d Synergy also tracks when people access a 12d Model project, either for edits or to share data and if it is opened ready only. You must have administrative permissions to see this list, but if you do: