The transfer is started but often interrupted with following error:
0/07/02 13:40:50  CFTT82E transfer aborted                 <IDTU=A000104Q PART=RESOPHIP 302 R 0 2f0>
10/07/02 13:47:59  CFTT82E transfer aborted                 <IDTU=A000104Q PART=RESOPHIP 302 R 9 2746>
10/07/02 13:54:26  CFTT82E transfer aborted                 <IDTU=A000104Q PART=RESOPHIP 302 R 0 2f0>

Sometime small data packets could disturber the network.
Some network errors could appear in CFTNET.TRC file:

TCP  send error            SRVsend    ce=8C51FBFFH cs=00002746H 08:22:48,355
    rc=-1 LastError=WSAECONNRESET(10054)                                    

One solution is try to increase data packet sent to the network, in particularly for text file containing a lot of short lines. To do this, in the CFTPROT definition, the parameter MULTART should be set to YES.