Add interface by ifIndex

Found how to do this from support...

Get the NodeID for your device from the Nodes table. 

Select NodeID From Nodes where IP_Address = 'YOURIP'

Use that Node ID to insert into the Interfaces table... Insert the NodeID, Interface Name, ifIndex, and ifType, and ifTypeName.

INSERT INTO [dbo].[Interfaces]

([NodeID], [ObjectSubType], [InterfaceName], [InterfaceIndex], [InterfaceType], [InterfaceTypeName])
     VALUES
           (306, 'SNMP', 'GigabitEthernet5/1/0.1501733', 21473, 135, 'l2vlan')

Now get the InterfaceID from the interfaces table that you just intserted.

select [InterfaceID], [NodeID], [ObjectSubType],[InterfaceName], [InterfaceIndex], [InterfaceType], [InterfaceTypeName] from Interfaces where NodeId = 306

Then insert these values into the Pollers table.

insert into Pollers ([PollerType], [NetObject]) values ('Poller_IE', 'I:9758')
insert into Pollers ([PollerType], [NetObject]) values ('Poller_IT', 'I:9758')