Amazon Collections - Created Titles, but can't put my MOBI files in them.

[Danpoet]

I went online to my Amazon account, and created Collection titles for the bundles of ebooks that I have purchased and downloaded from StoryBundle.com. I have downloaded Calibri, as well as Calibri Companion on my Fire 8 HD.

I can't figure out how to copy the downloaded titles into Collections.

I created the Collection titles on the Amazon Website, but the titles don't show up on my Fire 8. I tried Sync, but still no Collection titles.

I did figure out how to copy my ebooks into the Books section of my KF8 using Calibri, but not how to organize them into a collection.