inserted object loses transparent background

cayce

I am trying to understand why an object I am inserting into PP2007 is coming
in with a white background. In this instance, my object is a Word 2007 table.
I use insert> object> browse to file.

I have done this many times and the background is always transparent. For
some reason, not so in this instance. I have gone into Word to verify that I
have table shading set to none.

Any ideas on why this is occurring and how to fix it?