On DayzUnderground we like to analyze our logs and see who connected. However the .ADM logs are incomplete, see the following extract from the same time period. When someone connects with the same name as someone that just connected the connection logs are not written. Which happens all the time on a full server because changing your character name has not been working without using launch parameters.

BEC LOG:
15:53:14 : Player #5 Survivor (6) disconnected
15:53:14 : Player #106 Survivor (6) (68.112.94.27:2304) connected
15:53:15 : Player #106 Survivor (6) - BE GUID: 9546dc6ece034344de69216b7a9531cd
15:54:37 : Player #99 Survivor (31) disconnected
15:54:38 : Player #107 Survivor (31) (81.101.58.144:2304) connected
15:54:38 : Player #107 Survivor (31) - BE GUID: 1a3c3298570bd624240933b890e1cf95
15:54:44 : Player #105 Survivor (41) disconnected
15:54:44 : Player #108 Survivor (41) (71.182.238.121:2304) connected
15:54:44 : Player #108 Survivor (41) - BE GUID: 7a5b1b0363103c124d1f2babbb2e2cfd
15:54:46 : Player #55 Survivor (45) disconnected

ADM LOG:
15:53:14 | Player "Survivor (6)"(id=ce54I/SvZcF9gU0VpsUJxjGqN0rLyMVkLxoEibUJqKE=) has been disconnected
15:54:37 | Player "Survivor (31)"(id=0zTWlSo4Fuq/rG7Mac94eEZmZPAFpC0yy2lHzPB4suQ=) has been disconnected
15:54:44 | Player "Survivor (41)"(id=Unknown) has been disconnected
15:54:46 | Player "Survivor (45)"(id=ymNXNdtK/fopvFH5lWqibMMiiOi05YXYVaRY/irLrv8=) has been disconnected