On my game, when placing down multiple combinators of the same type, they all share data. If I set up the signals in one, all others of the same type will share that setup. Fresh install.

Mods installed:
aai-programmable-structures
aai-programmable-vehicles
aai-signals
aai-vehicles-chaingunner
aai-vehicles-flame-tumbler
aai-vehicles-hauler
aai-vehicles-laser-tank
aai-vehicles-miner
aai-vehicles-warden
aai-zones
Additional-Turret
arumbalights
Bottleneck
bullet-trails
CircuitsUI
combinatorgraph
data-raw-prototypes
detached-gun-sounds
disk
ElectricVehicles
Factorissimo2
Helicopters
integratedCircuitry
LoaderRedux
long-reach
more-virtual-signals
nixie-tubes
off-grid-effects
recursive-blueprints
SmartDisplayRedux
Smokeless
UsefulCombinators
VehicleSnap

Hmm...

Major bug confirmed, working on a fix now

I was trying to wrap my head around it. Any chance you can tie it to the entity.position when saving to the global data? Then it has a unique identifier that won't change until it is mined, when you delete the data.

And thanks for the quick response. Great mod. Learned a lot from your code.

Thanks, and I solved it it was using table ids as a unique identifier which don't change apparently so I switched to doing some checks on the entity itself and the stored object.meta.entity