Hi Paul,
Good to hear you already have those originals downloaded!
There is no need to grab the thumbnails as those are not strictly necessary as the asset server can generate them on demand, but if they are in place with the appropriate suffix denoting the resolution, the asset server will skip generating them.
I’ve prepared a ZIP file including both the originals and thumbnails directories from our asset server for your instance and shared it to your UBC email directly via Google Drive. If there is a more convenient delivery method for you, just let me know!
Once you have these files, you can simply add them to your directories, and the assets should display as expected in Specify. Hopefully this is the last piece of the puzzle!