Migration of Dongle-M_3650

[augenzwinkernhh-spec]

Hello everybody and happy new year. I wanted to change my coordinator to the above mentioned Dongle. Everything works fine so far, zigbee2mqtt is running without any errors. All devices came back (visible) but either without any LQI or some with only 40 LQI. Before changing everything the signal was stronger. Only one router CC2530 came back. Does anybody have a hint how to get all devices back?

My setup:
Dongle M 3650 Coordinator
2 router CC2530
1 router Sonoff Zigbee 3.0 USB Dongle Plus