Almost perfect!

This plugin is impressive. Not only does it actually import attachments, unlike the WordPress importer, but it properly attaches them to the right posts (at least, it did for me, I’ve noticed other reviews saying it didn’t). I used this in combination with WP Attachment Export, and for the most part, it worked great.

The only that didn’t work is that, at first, it only saw 179 attachments. I had to edit the WRX file after the first run to delete references to those 179 attachments and after that, the plugin successfully found the remaining 1500 or so. This may be an incompatibility with the latest version of WordPress. Regardless, this tool still saved me a TON of time.