Connected with TWS Support. The simple way is to manually request an Audit Trail (file) like so:
file:///C:/Jts/dhuilcyzt/Thu.audit.xmls.html
Then, parse the file for "Expired" Status.
Automation would have to be done via API requests and regrouping of combo orders would be done by "OrigOrderReceiptTime".
I may be better off using order Staging functionality of my front end.