youhost on "[Plugin: WP-Filebase Download Manager] Is this a bug? Changing category to a file that is erased."

I really like this plugin
and I think it's a really cool plugin.

But I noticed that if I change the category of a file in the backand, the page tree (file browser) is updated, but the file is missing.
It is really deleted from the directory
I'm using version 3.1.02 and WP 4.3.1

Is this a bug? or am I doing something wrong ?
Thanks

https://wordpress.org/plugins/wp-filebase/