Kindling a thought

Throwing this out there;

So, here's a thought I had today.

Sometimes I notice an Amazon listed Kindle edition goes missing (sometimes, it just changes and I re-search for it.) But, in this case let's say the e'book is no longer carried by Amazon.

Now, I own a copy from before.

If I "remove from device" can I still expect to be able to pull that title back from my Amazon archive, or are they totally reliant on their current stock and contracts?

I know of one such e'book, at least. I have it on my Kindle, but they don't list it now.

In my account, I still see the option to deliver from my library to my device of choice, but I wonder if that would get an error?

(Just to be safe, I'm still copying my Kindle content manually to my own backup!)

Wondering...