If you have regression privileges on a deployment area you can use the Deploy command to overwrite an item revision with a previous revision.
You must have a role on the stage that you are deploying to.
If you do not have regression rights the deployment continues but the previously deployed file is not regressed and no warning message is displayed.
Regression are enabled by default. To disable regressions set the following variable, in the Dimensions configuration file, to False:
DM_NO_DEPLOYMENT_REGRESSION FALSE