Difference in client tables between WLC and AP controller d0

Hello gang,
Anyone know whether its normal to have an APs' d0/d1 controller output show clients that don't appear on the WLC's "sh client <AP>" output?
Here's an example - 10 clients visible from a "sh client " on the controller, but 15 clients visible on AP4s "sh controller d0" debug.
Granted the User Idle Timeout has been bumped up to 7200 seconds, but shouldn't the AP's d0/1 client table get updated if/when a client roams to another AP nonetheless? Wouldn't this otherwise cause confusion? Is the Split-MAC Split-brained?
Thanks for your input,
--Bruce Johnson
(mcores2wlc1) >show client ap 802.11b mell9s1ap4
MAC Address AP Id Status WLAN Id Authenticated
00:40:9d:31:b0:79 130 Associated 6 Yes
00:40:9d:34:1f:04 130 Associated 6 Yes
00:40:9d:33:ee:04 130 Associated 6 Yes
00:40:9d:2b:d1:6a 130 Associated 6 Yes
00:40:9d:31:23:a3 130 Associated 6 Yes
00:40:9d:33:e9:28 130 Associated 6 Yes
00:40:9d:31:27:a5 130 Associated 6 Yes
00:40:9d:33:eb:4b 130 Associated 6 Yes
00:40:9d:31:22:1d 130 Associated 6 Yes
00:40:9d:33:ee:cb 130 Associated 6 Yes
(mcores2wlc1) >debug ap command "sh cont d0" mell9s1ap4
(mcores2wlc1) >Thu Feb 26 18:54:10 2009: mell9s1ap4:
Thu Feb 26 18:54:10 2009: mell9s1ap4: ---Clients AID VLAN Status Age Tx Mode Enc Key Rate
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d33.eaec 198 6 0000 0800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d30.efd1 197 6 0000 0800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d31.bc74 195 6 0000 2800001FF 7165/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d31.27a5 193 6 0000 0800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d33.eecb 192 6 0000 2800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d31.221d 190 6 0000 0800000FF 7194/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d33.eb4b 186 6 0000 0800000FF 7194/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0016.6faf.9d64 185 3 0000 0C00000FF 7186/7200 0-0 0191 200 0-10 10FC0000 06C
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d33.e928 177 6 0000 2800001FF 5818/7200 0-0 10111 200 0-10 10000000 016
=>Thu Feb 26 18:54:10 2009: mell9s1ap4: 0016.6faf.9db8 176 3 0000 0C00000FF 7140/7200 0-0 0191 200 0-10 10FC0000 06C
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d31.23a3 174 6 0000 2800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d2b.d16a 165 6 0000 1800000FF 7194/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d33.ee04 163 6 0000 0800000FF 7194/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d34.1f04 151 6 0000 1800000FF 7195/7200 0-0 10111 200 0-10 10000000 016
Thu Feb 26 18:54:10 2009: mell9s1ap4: 0040.9d31.b079 147 6 0000 2800000FF 7194/7200 0-0 10111 200 0-10 10000000 016

hi Leo,
I tested this out, but i guess its not working as i thought it would work. I configured the backup primary controller IP and name in the global configuration of the Wireless tab of the WLC and left the AP high availability blank with no settings. I joined the AP to the WLC and show capwap client ha output on the AP shows the backup primary controller name. but if i shut down the primary controller, the AP does not join the back, it just tries to get WLC ip by renewing DHCP forever and stuck in that...   below are the outputs.. any idea why its like this ? I thot if there is no HA configured at the AP level, the global config on the controller level should take effect ?
LWAP3-1042#sh cap cli ha
fastHeartbeatTmr(sec)   7 (enabled)
primaryDiscoverTmr(sec) 30
primaryBackupWlcIp      0xA0A700A
primaryBackupWlcName    WLC2-4402-50
secondaryBackupWlcIp    0x0
secondaryBackupWlcName
DHCP renew try count    0
Fwd traffic stats get   0
Fast Heartbeat sent     0
Discovery attempt      0
Backup WLC array:
LWAP3-1042#
*Apr 30 20:36:21.324: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Apr 30 20:36:31.829: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 10.10.114.49, mask 255.255.255.0, hostname LWAP3-1042
*Apr 30 20:37:17.832: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Apr 30 20:37:28.337: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 10.10.114.50, mask 255.255.255.0, hostname LWAP3-1042
*Apr 30 20:38:14.338: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
Not in Bound state.
*Apr 30 20:38:24.842: %DHCP-6-ADDRESS_ASSIGN: Interface GigabitEthernet0 assigned DHCP address 10.10.114.51, mask 255.255.255.0, hostname LWAP3-1042
regards
Joe

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