The Koha Offline Circulation tool(s) does not trigger Notices after a successful .koc file upload.
I think this is at least a partial duplicate of bug 21494. I've updated the description a little, not upload but processing of the transactions should trigger the sending of the notices. I agree it's confusing that it doesn't happen and the feedback would be even more important to users in case of offline circ. Maybe it could be a setting/checkbox you check when processing the transactions.
*** This bug has been marked as a duplicate of bug 21494 ***