Project does not display the filename in the inserted file. It displays
the text held in the "Title" file properties (Menu: File/Properties)
field of the inserted file.
I do not think there is away to "hide" this information in the master
file. Frankly, this is not something I ever wanted to do. However, for
you I experimented with using a filter to exclude rows with
[OutlineLevel]=1 and that did not work. Perhaps another cleaver filter
will work for you. Give it a try.
That being said, if you were to simply change the displayed text from
the file name to something more "project manager friendly", this would
achieve your need?
--rms
www.rmschneider.com