Adobe DTM has a staging and a production embed code.
We have to point DEV, TST and UAT environments to Adobe staging which causes a lot of testing issues.
Is there a way of saying that one should use a specific version of the Adobe DTM stage embed code.
Is it possible to clone a web property so that we can use one purely for testing purposes?
Not within DTM. We recently announced Adobe Launch which will have multiple staging/testing environments. You can keep up on all things Launch related at Adobe.com/go/launchme