with that you only need do the scan the
once (Full scans on Both freesat & non-freesat) this makes a good original copy.
If there's a channel change or a channel moves, Drop the
Original File back onto the humax
Let it find the channels that moved, maybe just do a freesat scan, its pretty quick.
Drag the updated channel list back off the box, keep that safe (that is now your
NEW original backup)
Then
Edit a copy of that file, though ChannelEditor and push the file back over onto the box - any new channels added or moved will show up fine.
I pushed all my non-freesat channels that I like up to 5000, that way it only takes a few minutes to make them go into freesat quicker.
http://i56.tinypic.com/2mmbple.jpg