Thank you all for the great infomations.
The installers will be scanning old APs so we will have S/N and MAC for each old AP
We are not sure if we are going to keep the same name schem, so the "ap Replacement" will not work.
Also one reason for removall is licenses count, both AirWave and AoS
I got this info from Support,
Using MAC address, # dbc "Delete from ap where lan_mac = '00:1A:1E:CB:16:8C';"
Using Serial number # dbc "Delete from ap where device_serial = ‘A0005690';”
So a bit of "awk, bash, while", I think I got what we need.
Thank you again.