Auto-increment EA Element version numbers

[ttlproject]

Is there a way to auto increment the EA Element version numbers.  For example a use case has a phase and version number.  We'd like to auto increment the version number on change.  The reason I ask is to enable version tracking.   We can't use version control because parts of our development team are located in different geographical locations around the world and we can't get a VPN connection in for security reasons.  
In the current state of play we have one EA model master at each site, each of these master copies are synchronised every week with a central master copy.  Before each sync we backup the model.  What we would like to be able to do is look at a model element.  If we see that say it is version 1.2, we can then look through our various backup's to see what it changed from.  I know this is a round about way to achieve something simple, but we cant use source control for geographical reasons.  Source control can be shared over the web we've already looked at that, again we can't do this for network security reasons.

Thanks,
Gavin

[thomaskilian]

You could inspect the column ModifiedDate in the table t_object. Probably this value would help more than any autoincrement.