Receipt Correction/ Return using Import Program

We are working on a project to integrate Oracle eBS with Maximo. Receiving will be done in Maximo and interfaced to Oracle eBS.

Have following questions

1. We have created a receipt in Maximo and imported the same in Oracle eBS. Now, in Maximo, this receipt is corrected to reduced received qty. Does oracle allow to do this -ve correction using import program ? If yes, how and what information should be populated in rcv interface table

2. For Complex PO, we will be creating work confirmation. Will oracle allow to correct work confirmation using import program ? If yes, how.

Thanks, Vishal.