The first case : 2 AP being moved to a different location
a. You would need to update the AP [ADDRESS] on the dashboard if you like to have accurate location details updated [Not Compulsory but suggested best practice]
b. Reconnect the AP at the new location it will establish reachability with the Meraki cloud and will come online.
NOTE : Existing configuration will be intact in this case.
Second Case : Existing AP moving to Different ORG, Network, Location
a. First you have to contact Meraki TAC with the existing Customer Number associated with the existing ORG that the AP is associated with and move the licence associated with that AP Serial number to the new ORG dashboard.
b. If clients are connected you can keep the AP active till downtime.
c. Disassociate the AP form the current Network on the Old ORG. [Requires Dashboard Access]
d. Un-claim AP from the ORG > Inventory [Required Dashboard Access]
e. Re-Claim the AP on the new ORG dashboard and associate it with the new location and network.
NOTE: The configuration of the AP will not be migrated in this case and requires reconfiguration the device.
Third Case : Please follow the same steps listed on second case.
Information you will require for support and proper execution:
Admin details for all the three Organisations [Org Name, Admin Name's, emails, and address]
Customer Number for all three Organisations
Meraki Sales Rep Details , you can get this info from Dashboard> Login > Get Help > Scroll Down to the end.
Suggestion
It's always recommended to have all devices under a single org inventory and distributed to different networks that makes asset movement, configuration and support easy in the future if you are working with the same owner.