Support for Hardy finishes up in about 6 months (April 2013 - with the release of Ubuntu 13.04), but the Debian components of TKL v2009.x versions (they included some pinned Debian packages) are EOL and as such so are the v2009.x versions of TKL.
The suggestion of manually migrating content is valid, but personally I'd try using TKLBAM first. Just 'apt-get install tklbam' in the old server. As long as you document the process to get v12.0 running on Hyper-V and don't destroy the current MW server until you have confirmed migration you should be fine. Although if everything doesn't work as it should OOTB then just manually migating the content would probably be easier than mucking around with it.
Ubuntu 8.04 not quite EOL
Support for Hardy finishes up in about 6 months (April 2013 - with the release of Ubuntu 13.04), but the Debian components of TKL v2009.x versions (they included some pinned Debian packages) are EOL and as such so are the v2009.x versions of TKL.
The suggestion of manually migrating content is valid, but personally I'd try using TKLBAM first. Just 'apt-get install tklbam' in the old server. As long as you document the process to get v12.0 running on Hyper-V and don't destroy the current MW server until you have confirmed migration you should be fine. Although if everything doesn't work as it should OOTB then just manually migating the content would probably be easier than mucking around with it.