A upload field was previously available in some backend forms so that the Filelist module could be bypassed.  This behavior has been disabled for most, if not all, instances.

Using the upload field did not save the file in your site's fileadmin space.  As a result the file not available to be used in other pages in the site and didn't count toward file quotas.

Now you should see only the file list and the browse for records fields (visually, we have gone from the default control to the disabled upload field as shown)

Hopefully you will also find the reduction in fields to be less confusing.