InDesign CS5.5 get file path of converted documents

Hi, I just noticed that when opening in InDesign CS 5.5 a document that was created with an earlier version, you cannot get file path anymore:

tell application “Adobe InDesign CS5.5”
tell document 1
get file path
end tell
end tell

error “Adobe InDesign CS5.5 got an error: Unsaved documents have no path.” number 90937

I was wondering if there was any workaround other than save the converted document first

If you got the script to open the document as well you can get the file path of the original. The script I post here saves it as well but you wouldn’t have to.

tell application "Adobe InDesign CS5.5"
	set fileToConvert to choose file with prompt "Choose your old InDesign file to upgrade."
	open fileToConvert
	save document 1 to fileToConvert
end tell

Browser: Safari 533.19.4
Operating System: Mac OS X (10.6)

Will give it a try, thank you.