Hi @Mackadelic,
Hope this issue is resolved for you. Were the affected devices enrolled through ADE ? Just wanted to point out that if a device is enrolled through ADE then ADE settings pushed to the device is required to be removed from "Systems Manager > Manage > ADE" page before factory resetting the device to fully unenroll the device from Meraki SM. Following kb has step by step guidelines on unenrolling an ADE enrolled device.
Uninstalling Systems Manager and Removing Managed Devices
Thank You,
Sabina
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