[Plugin: NextGEN Gallery] Migrate NextGen Gallery to multisite? import/export?

First, fantastic job on NextGen I’ve been using it on several small sites for years and it’s done the job nicely!

I’m migrating several older wordpress blogs into a single WordPress 3.1 Multi-Site installation for easier management.

1) Having migrated the rest of the site successfully, how can I export/import my NextGen Albums/Galleries/Images?

2) If a import/export tool doesn’t exist, the number of Albums/Galleries is manageable with around 100 images. However I don’t have the original image-sets available to re-upload. Is there a procedure wherein I could recreate the Albums/Galleries by hand, and copy the images from the old wordpress directory to the new one on the server?

3) Is there a way to migrate images or galleries back-and-forth between NextGen, and WordPress’s native Media-library?

Thanks for your time!