New Post: Undeploy application

Regarding the documentation, I guess that is true. It discusses upgrades by manual process but not by script.

To your question on "is it enough to deploy on top" -- no. On the command-line, you just need to change the target from Deploy to Undeploy, and do not include the SkipUndeploy property. After the app is undeployed, you can either script uninstall the MSI and then run Randy's script, or if you are updating the MSI properties in the .btdfproj, you can just install the new MSI and it will do an upgrade, then run Randy's script.

Thanks,
Tom