XRP Neighbors list Maintanance limits and how avoid roaming errors

Continuing the discussion from Wireless Clients Seamless Roaming Best Practices:

I have large building with per floor Managment VLAN, I also install APs on stares and in elevator (transition points between floors), I want to add these APs to XRP Neighbor list Manually to APs which can face these transition points, is there any mechanism to add XRP Neighbor to AP using CLI and or preferably using cnMaestro (User Defined Overrides)? or APs do listen XRP Messages and handle roaming data even from those APs, which are not appearing with “service show xrp-neighbors” list?