Named desinations and bookmarks are not the same. With the option nameddest= you can access all which you add as destination in Acrobat.
never mind I figured it out...
I'm looking for the same topic.
Do you have a solution for it?
Adobe does not support this.
Here is what we do...
1) Make sure the Acrobat plugin is installed in Word
2) Set the Word Acrobat preferences to export Word bookmarks - the default is wrong
3) Convert to PDF
4) Open the PDF in Acrobat
5) We use an Acrobat plugin by Evermap that creates "destinations" from bookmarks
Now...you can finally GoTo a "destination"