About the Update Base URL tool (inside the Ning Import module)
Ning To Jamroom
Its only the 'base domain' that gets changed, ie. the string 'http://olddomain.com' will get changed to 'http://newdomain.com' so any URL arguements after the old domain will remain unchanged.
However, before you do this, note that this only works on text strings imported from Ning in discussion posts and comments. They invariably refer to embedded images in the strings that are themselves imported to JR and are stored on your server in the /data/media/0/0/Ning_Media folder, with the original URLs already modified on import to point into this folder.
So, this Change Base URL tool just does exactly what it says it does, change 'http://olddomain.com/data/media/0/0/Ning_media/*' to 'http://newdomain.com/data/media/0/0/Ning_media/*'.
In a previous thread you were talking about lost pdf files? If those files were part of the imported archive, the chances are they have been imported and this will work, but if those files are still on another server and you run this tool to get them, the chances are all your working embedded comment images etc. will be broken.
hth