So building on my last post for creating CCK fields, here's some code I whipped up to migrate from the D6's core upload.module to the filefield.module. This isn't general purpose code but might help someone else out. The catch is I'd built a video node with and was using the upload module to attach exactly two files, an image and a video. The new node will have separate thumbnail and video fields. If you'll be moving to a multi-value field this code won't work for you.

The gist is the same as before, setup your field for video and your field for images then export using:

and
Then roll that into an update function that also moves the file data around in the database. Code is after the jump.