I swapped between levorg models GTS 2014 to STI 2018.
1.6 and 2.0 are almost identical apart from engine the electronics will be the same.
No issues with keyless entry or immobiliser, not part of cluster i have been told. (If it was i would have had issues )
Only thing that is locked in is the total kms as that's stored in the cluster
Superfly also did the swap to a WRX in his
thread here -