Thumbnail cache working when exporting library to one single file

Hi

If I export library to a single file and then I import it into a new kodi client, I see thumbnails are just created with another name (%appdata%/Kodi/userdata/Thumbnails). But if I delete it, it’s created again with the same name (of that particular kodi client). The exporting file (videodb.xml) contains the URL where to get the thumbnails.

So I don’t understand what is the problem described when exporting to a single file. Perhaps is not a problem in Jarvis anymore? Or does somebody have a step by step example where this would be a problem?

-J