Using the legacy transform maps, it's very easy to retain the existing value, or use that information in the logic of your transform.
Using the Robust Transformer, I'm having a hard time figuring out any way to do this.
Example:
I would like to import a discovery record to update a CI. Among many other things, that update would update the ci's model_id. The import works, it updates all attributes of the CI correctly.
However, I would now like to make the ci.model_id update conditional, and only update the model_id if the target CI's model_id is currently empty. Or maybe only update the model_id field if the ci.asset.purchase_line is empty.
This is very easy to accomplish using legacy transforms. How can I accomplish this with the Robust Transform Engine?
Thanks,
-Stephen
