Pass empty containers between IOs during data tansformation

Hi there,

We import data from a webservice to synchronize the data in the Siebel DB. The data is transformed from the external to the internal IO through a data map.

In the external IO, there exist empty xml nodes.

How can I transfer these empty nodes into the internal IO as well, so the EAI Siebel Adapter's Synchronize method finds the empty node and deletes the corresponding intersection entries?

Example:

Entities: Customer, Feature; M:M - Relation. Realized with a MVG from Customer to Feature

A customer can have 0-n Features, and a Feature can be assigned to 0-n Customers.