Mikrotik Firewall Connections - Remove by IDs

Hi guys !

Im having a problem when i try to delete some connection from the tracking list.

For example :

[admin@MK_Office] > ip firewall connection remove [find src-address~"192.168.1.169"]     
action timed out - try again, if error continues contact MikroTik support and send a supout file (13)

[admin@MK_Office] > ip firewall connection remove [/ip firewall connection find src-address~"192.168.1.169"]     
action timed out - try again, if error continues contact MikroTik support and send a supout file (13)

[admin@MK_Office] /ip firewall connection> print where src-address~"192.168.1.169" ;
Flags: E - expected, S - seen-reply, A - assured, C - confirmed, D - dying, F - fasttrack, s - srcnat, d - dstnat 
 #          PROTOCOL SRC-ADDRESS           DST-ADDRESS           TCP-STATE   TIMEOUT     ORIG-RATE REPL-RATE ORIG-PACKETS REPL-PACKETS      ORIG-BYTES      REPL-BYTES
 0  SAC  s  udp      192.168.1.169:5062    XXXXXXXXXXX:XXXX              2m59s         2.8kbps   3.7kbps       10 421       10 654       3 818 121       4 976 249
 1  SAC  s  udp      192.168.1.169:53011   XXXXXXXXXXX:XXXX               2m50s            0bps      0bps           69           69          37 153          33 961
 2  SAC  s  udp      192.168.1.169:5060    XXXXXXXXXXX:XXXX              2m42s            0bps      0bps       20 586       20 567       9 407 915      14 495 709



[admin@MK_Office] > system resource print
             uptime: 6w1h46m59s
            version: 6.30.2
         build-time: Jul/22/2015 11:17:58
        free-memory: 1470.6MiB
       total-memory: 1518.7MiB
                cpu: e500v2
          cpu-count: 2
      cpu-frequency: 1066MHz
           cpu-load: 0%
     free-hdd-space: 83.7MiB
    total-hdd-space: 128.0MiB
  architecture-name: powerpc
         board-name: RB1100AHx2
           platform: MikroTik
[admin@MK_Office] > system routerboard print
       routerboard: yes
             model: 1100AHx2
     serial-number: XXXXXXXXXXXX
  current-firmware: 3.24
  upgrade-firmware: 3.24

Im was looking at the forum for an answer, but i saw that this problem have been found in 2008 … It could be?

Here is this post, who has the same issue.

Thanks a lot !

Regards,