Axxon One supports keeping video source's recorded footage after the device is replaced. 

To do this:

1. Copy the old video device ID and delete it from the system.
   

2. Create a new device under the same ID (1) and bind it to the same footage archive (2, see Adding and removing IP devices).
   

   Any other parameters of the new device may differ (make and model, ID, etc.).

   
   

If you swap NVRs, make sure you preserve the same order of video channels for connected cameras.
Creating a new device with the old ID makes the previously recorded footage available for viewing/processing within the system.