Or a person could let the new torrent replace the ifo's.
Then they could join the seeding, or finish their download.
Copy the files from:
\STTMP\SLV
to
\Star-Trek
Load the new torrent file, point it at the drive, or folder, where "\Star-Trek" is, and let it verify existing files.
(In Bit-Tornado it's "verify existing files". Other software might say something else, or need you to use a slightly different method. That's why I say to copy the files, so there's a backup, until you get it to work).