This probably won't help you in this case but if you still have the old perl binary left then you can do:

     /path/to/old/perl -MCPAN -e'autobundle'
[download]

To create a Bundle::Snapshot_2004_07_07_00 (probably different date of course) and then do:

    /path/to/new/perl -MCPAN -e'install "Bundle::Snapshot_2004_07_07_0
+0"'
[download]

and this will automatically install all the modules for your new perl.

/J\