Select "update" from the dropdown for the appropriate episode.
Click "DO IT".
The mass-update page comes up, with the ed2k links textarea containing a list of file IDs:
fid:2608
fid:2607
fid:11727
When submitting the update request (note: The form's submit button is labeled "ADD" instead of "UPDATE"), the "fid:..." lines are ignored and an error message is shown:
ERROR: you need to enter some ed2k links
I'd guess someone just forgot to implement that feauture?