Besides this, the way how MDT works is that the 'back-end' (Deployment Share) is just a set of folders with files and scripts in it. The frontend is your machine were you have installed Windows AIK (or Windows ADK) and MDT 2012 or any other version.
So installing / configuring your server with a newer or older version of MDT does not affect your Deployment Share directly. It just installs another version of MDT.
Opening the share however with a version of MDT, determines if this share needs to be upgraded (Done automatically by MDT 2012 update 1) Opening a newer share with an older version of MDT doesn't seem possible to me. I have never tried it, since I don't
have a case for it.
Besides all this, why would one still use MDT 2010, when it comes to functionality and OS support this is more decided by which version of WAIK / WADK you use.
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