How do Refunds & Voids work with this integration?

Currently, we only send Approved donations to Aegis. If a donation has been processed successfully (approved) and sent to Aegis, but at a later time, you void or refund that donation, it will NOT be resent to Aegis. The techie folks @Beranrd inform us that it is not currently possible to issue refunds/voids thru their import process, using these files.