nrf52840 zigbee Delete online devices

path:

\experimental\cli\cli_agent_router\pca10059\mbr

When I execute "bdb start" in the serial port and then execute "bdb Legacy Enable", the terminal devices that are already connected to the network can be queried through "zdo mgmt_lqi 0x0000". However, if I want to delete the devices that are already connected to the network,  To disconnect the device from the network, run the "bdb leave XXXX" command when the terminal is powered on.  My question now is how can I execute a command to disconnect the device from the network even when the terminal device is not powered on. 
Now, if I power off the terminal device and execute the "bdb leave" command in the serial port, I will be prompted that the command response timeout cannot make the device off the network. I can still query the device information with "zdo mgmt_lqi 0x0000". 
And when I power up the terminal again, my ZigBee coordinator automatically connects to the terminal again.

Let me summarize the most urgent problem I want to solve: I want to execute a command that can successfully disconnect the terminal device even when the terminal device is powered off. In other words, when I execute a command to disconnect the terminal device, "zdo mgmt_lqi 0x0000" will no longer query the information of the terminal device.  thank you  

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