I'm trying to use the XBee 3 DigiMesh with sleep synchronisation. I can set up some modules on the same channel and PAN ID and they synchronise perfectly. But if I enable Encryption (EE=1) and assign the same key to the modules, synchronisation does not occur. I have tried this multiple times, and can see the modules synchronise/fail to synchronise just by changing the encryption setting between Enabled and Disabled.
Is this a known limitation of the sleep synchronisation feature of DigiMesh, am I doing something wrong, or is there an unknown bug?