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Where is provisioner information stored in flash?

Hello!  We have been trying over the past week to figure out how to best back up a provisioner/client so that if it goes down we can rebuild the network without re-provisioning.  We have heard about the .json file in the serial example, but I do not believe this data helps us as we want a device that serves as a client and provisioner that isn't connected to a PC or phone.  Is there a place in flash were we can copy the data into a HEX file and flash it into another device to make a drop-in replacement without making an image of the entire flash?

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