Adding files to book results in reverse order

[Dustin Wilcox]

Hopefully this is an easy one.

I had this problem in 7.2 and now 9 and wonder what exactly is causing it
and if there is a fix. I'm creating a book and adding 50 or so files to it
(through the add file button). Even though the files are sequentially
numbered, Frame adds them in reverse order. It's time consuming to go back
and reorder them. Is this just a quirk, am I doing something wrong, or is
there a patch?

Many thanks

Dustin