http://www.ubercart.org/project/node_import_uc_stock#comment-55048 Node Import and Ubercart File Download Integration
I've extended node_import_supported_v5.zip to add support for importing "Ubercart File Downloads". The only modification between my version and v5 is that I've added this patch to resolve an issue with node_import and PHP 5.3
I've also included the additional doxygen generated API docs, so that hopefully others will be able to get a handle on the API and contribute improvements.
It would be best if we could get these ubercart extensions added into the core node_import, so that others will find and use it. I think in order for that to happen though, cpILL's code will need to properly provide "$values['nid']" in postprocess functions. Right now that'll mess up any other contrib modules which depend on that functionality.