Nesam,
Airwave will remove the complete configuraiton if we fail to manage the devices properly.
If you are using template mode and adding devices in montior only mode then airwave wont delete the configuration.
If you are adding the devices in manage mode to Airwave group and if there is any default template present that configuraiton will get piushed to IAPs.
In instant config mode, even if you add devices in montior only mode the Airwave will start managing the devices, since in this mode it uses https to push the configuraiton. Moving IAP cluster to a instant enabled group where only default configuraiton present, Airwave will push this template configuration.
Airwave will wipe the cluster configuration , if you are trying to change the policy version in instant config, if firmware version is in 4.2 and trying to apply lower policy version , configuration will get deleted.
Regards,
Pavan
If my post address your query, give kudos:)