Need help with shared hyperlinks

Question

I need help understanding the shared hyperlink option when creating hyperlinks in InDesign CS5 (Mac) and how to change a shared hyperlink destination.
I want to build a document that contains hyperlinks to files on the client’s server. The end use is to make a PDF in which the client can click on a hyperlink and it opens (for example) a Word document or another PDF on their server. When I started the project, I thought I would create shared hyperlinks because a single server document would be referred to by several links scattered through the InDesign document I was building.
From the Hyperlink palette fly-out menu I chose New Hyperlink, then Link To: File from the dropdown, and I clicked the Shared Hyperlink option, and then OK to close the window. I export the InDesign file as a print PDF, and the hyperlinks work.
Now I need to change the file paths, because the client moved their files to a new location. When I re-open the hyperlink in the Hyperlink palette by double clicking on it, the Edit Hyperlink window opens but it shows my link as:
Link To: Shared Destination (rather than File)
And the destination box underneath shows:
Document: [my document name]
Name [the file path I put in]
However, this link is not editable. I don’t understand why InDesign does this on its own.
I realize now that it was not necessary to tick the shared option when I built the hyperlink. Is there a way (a script? another method?) that I can remove the shared nature of the hyperlinks so that when I go to edit them they show as links to files (Link to: File, not Link to: Shared Destination) with a live Destination Path box where I can edit the link?
(If anyone tries to help with a script, note that my document also contains other hyperlinks to internet URLs and emails that I don’t want to disturb.)
Thanks for your consideration.

Answer 1

Well. I do feel sort of bait-and-switched, but...
I want to get the links back to the point where double clicking on the hyperlink name (number) in the Hyperlink palette opens an Edit Hyperlink dialog where the destination is Link to: File and the file path shows up in the File Path box as an editable string. Just the way I made them in the first place.
It's good that you're comfortable editing the IDML.
If you compare links made both ways in the IDML, the only distinction between the Shared and the not Shared seems to be the hidden attribute of the <HyperlinkURLDestination/> tag.
Allegedly you cannot edit this in Javascript (though you could, I suppose, create a new HyperlinkURLDestination with all the same properties and then chang eeach hyperlink to point to it).
But editing it in the IDML works fine. Open designmap.xml and change the Hidden="false" to Hidden="true". Of course, you only want to do that in the <HyerplinkURLDestination/> tags...
Something about this seems fishy to me, so you might want to verify it yourself in a single case before you put too much effort in. But I think it's right.