ergophobe - 3:52 pm on Mar 5, 2013 (gmt 0)
Shame on me ;-)
I hope it's working out for you. But yes, migration can be a real hassle. I not too long ago migrated from a gallery app to Drupal 7 and just had to do a fair bit of coding and manual cleanup.
And not every type of data from one system has a natural migration path to another, so often there has to be custom processing.