Easy way to map OPC tags to other OPC tags

Hello everyone.
I want your suggestions for the easiest way to map tags. I have two machines connected to my Ignition gateway, one talks OPC UA (Ignition is the OPC client), and the other one is AB PLC. I need to map some tags from the first machine to AB PLC tags inside Ignition. I know it's easy to do with scripting on tags themselves (On Value Change) with simple system.tag.write, but is there any other way that is more efficient.

Take a look at transaction groups, you can kind of set them up to do OPC to OPC.

Otherwise you need to go scripting route, easiest would be to script all the values you want to transfer in a single script