Hi
In the previous version of Octopus (2.6) the 2 following properties were availabe:
LastModifiedOn
LastModifiedBy
it sounds like there has been a decision to suppress them as part of version 3.x.
As admin I find this auditing information very useful, and if anything I think that auditing should improve (it is very hard to track changes at the moment) - so I suggest to bring it back.
See more info:
http://help.octopusdeploy.com/discussions/questions/7091-api-change-from-26-to-3213-missing-information
Thanks
Nir