I would make sure master controller is not enabled on the wlc that the APs are joining. Also make sure that the APs have the primary, secondary and or tertiary wlc (hostname is case sensitive an must math the wlc system name) configured correctly an ap fallback is enabled. Make sure that the mobility groups are correct also, seems like a configuration on the wlc could of changed.
Well... The data was migrated. So is it 100% fool proof... sometimes but not always:) I guess it's something I have learned from experience. Sometimes it goes well and sometimes not so well. Now I don't know what has changed, but it's something you will have to make sure you fix so that WCS doesn't push it out again.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
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