Sync toy using older item to update

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I have been trying to keep some drives in sync and I found that if I use the
most recently changed drive to update another drive then the sync is perfect;
new items update the older drive and things changed on the older drive are
reflected in the more recently changed drive. When I use that freshly updated
drive to sync to a 3rd drive that was updated a while back I lose all the
changes and am brought to the same staus as the older drive. The times on the
computers are all the same. All my folder pairs are on syncronize. The more
freshly updated drive has always been on the left. The only thing I can think
of is that the last drive in the sequence is NYFS while the others are FAT.
Got any ideas.
Thanks,
Kurt
.



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