After breaking a machine (IV Transformer, MFSU, PESU) that is actively receiving power, console gets spammed with warnings about the machine not being added to enet.

[23:18:50] [Server thread/WARN] [ic2]: EnergyNet.emitEnergyFrom: ic2.core.block.wiring.tile.TileEntityElectricMFSU@7fe1646b is not added to the enet
[23:18:50] [Server thread/WARN] [ic2]: EnergyNet.emitEnergyFrom: ic2.core.block.wiring.tile.TileEntityElectricPESU@7bb6a657 is not added to the enet
[23:26:09] [Server thread/WARN] [ic2]: EnergyNet.emitEnergyFrom: ic2.core.block.wiring.tile.TileEntityTransformerIV@5e0a574c is not added to the enet

I have not tested this on single player, only on Kettle version git-HEAD-a8543ec, Forge version 14.23.5.2812 (MC 1.12.2), IC2 Classic version 1.12-1.5.4.5.

same as for #371 I can reproduce it using a Kettle server, but this does not happen if just playing in single player or using a forge server

Closing. Look for reason at #371