Sarah,
c) for that particular file, whether it could be re-downloaded with
some small programming changes to direct links to messages of the
same numbers in the io group.
As I said, I don't think you can rely on them being the same numbers.
Depending on how many messages are involved it might not be too difficult to set up a table (in Excel or similar) that maps the Y!Group numbers to the I/O group numbers. I would expect discontinuities wherever a Y!Group message had been deleted prior to the transfer.
If you think any of the other owner/moderators would have further
ideas, grateful if you could bring it to their attention.
You just did. I was referring to the other members of GMF. ;-)
Shal
Shal Farley