ESI response file - BOM update

We have a phantom item at the first level of the BOM that we do not want to publish as-is.

The structure is:

• Parent → Phantom → Child parts

In Oracle, the expectation is:

• Parent → Child parts (phantom should be flattened)

We are enabling one-level publishing only. Is it possible to generate the XML in such a way that the phantom is replaced with its child BOM (i.e., flatten the phantom during publishing)?

I’m considering two approaches:

1. Manually manipulating the XML, though this may be complex and error-prone due to multiple scenarios.
2. Sending the BOM for phantom instead of phantom before generating the XML.

Is there a better or recommended approach to achieve this?