Are you sure that altering the Nodes table is sufficient for assigning nodes to different polling engines?
Looks like it could break some references with other tables in Orion DB....?
Below a list of all Columns called EngineID occuring in Orion DB:
SELECT * FROM information_schema.columns WHERE COLUMN_NAME = 'EngineID'
Nodes EngineID
ActiveAlerts EngineID
VoIPInterface EngineID
Alerts EngineID
AlertSuppression EngineID
Engines EngineID
Events EngineID
DiscoveryProfiles EngineID
DiscoveryIgnoredNodes EngineID
IPAM_Engine EngineId
SysLogRules EngineID
EngineProperties EngineID
NCM_NCMSettings EngineID
NCM_JobEngineNCMJobs EngineID
NCM_Nodes EngineID
TrapRules EngineID
cbQoSPollerJobs EngineID
Traps EngineID
SysLog EngineID
NetFlowSnmpJobs EngineID
Thanks for your comments....