when upgrading from 386.7 to 386_7.2, one of my AiMesh node was connecting with a wrong ip address (despite being defined correctly in DHCP as manual assignement) and could not be detected by the main. I simply brought it back near the main, connected its WAN port to a LAN port of the main and issue a reset ; I then added it back from the main and everything came back as before with a few exceptions (needed to change a few nvaram variable (to be able to run user scrpit, change LAN name etc ...))