Are you suggesting 2013 doesn't even have the option to import MDT files (with a registered MDT2009 on the system)?
I know the cut-off date for support and registration of MDT has been coming up but i'm honestly horrified that Autodesk hasn't incorporated some native MDT import into Inventor to support legacy data. We have been making products for the last 60 years, obviously before CAD and MDT, and we have those hand-drawn sketches for ref as/when needed - in the same way we still have our MDT data from the many years we used it prior to Inventor. Once in a blue moon we need to view this old data as components change (or become obsolete) and assess the need to update the product/assembly - if there are any changes then we import into Inventor and work with the data there. Almost as a rolling update as/when needed - and we have been working this way since about Inventor 6, but we still have a LOT of old MDT data that hasn't been converted which we may (or may not) need to access in years to come. Only this year I had some work evaluating updating an old product we've sold since 1998, so I had to go through the history of the product and can you guess what software that data was in?
So, if one of our computers dies, or we get a new cad-user, we are now unable to install MDT and thus view any MDT data or import into Iv (despite being on subscription for the last god-knows how many years)?!?
I can understand canceling support for an old piece of software and getting people onto Inventor for any work but I can't understand removing the ability to import old data into the new software. It's almost ironic that the users that are affected the most are those that have been the longest customers with the oldest data...