Retain customer ID after running Reject Inference node

Hello Everyone, 

Does anyone know how to retain a customer ID or account ID in the merged dataset (accepts/rejects) after running the Reject Inference node?  My accepts dataset and my rejects dataset both have it, the logistic regression model did not use it hence the customer ID was excluded, but when connecting all three into the Reject Inference node, the output dataset does not have it anymore.

Thank you in advance!