XIQ AP305C issue with FA when converting to WiNG

[Willem_Van_Kerc]

When converting a AP305C from XIQ to WiNG when connected to a fabric attach environment we always face the problem that after the conversion the AP is not reachable in it's management vlan but only on the default 192.168.1.20 IP address (visible through LLDP neighbors).
The only solution to get it working is by putting the AP after conversion in an L2 vlan and login with SSH to the AP, convert it to centralized and afterwards convert it back to WiNG.
Afterwards it can connect to the management vlan in the FA environment without an issue.

Does anybody have an explanation about this strange behaviour and how we can avoid the default IP of the AP after conversion?
Tried AP conversion on a non FA port but issue is the same...
Very annoying and time consuming.

Environment:
Core layer: Fabric VSP7400
Access layer: ERS4950 Fabric attach

Thanks in advance

[Willem_Van_Kerc]

There was an error in my explanation:

"The only solution to get it working is by putting the AP after conversion in an L2 vlan and login with SSH to the AP, convert it to centralized and afterwards convert it back to WiNG."

should be:

The only solution to get it working is by putting the AP after conversion in an L2 vlan and login with SSH to the AP, convert it to DISTRIBUTED and afterwards convert it back to WiNG.