I have just noticed that the {REPORT ORDER DETAILS report tag ignores orders with negative prices
Top report: REPORT TICKET DETAILS
Bottom Report: REPORT ORDER DETAILS
I put through an order for -100 (refund)
EDIT: If i specify ticket type using (TY=Ticket) it works
Show the report template and your refund rule, your refund automation is probably setting different state/ODI value.
Its not the state it works if I specify the ticket type.
Its not really an issue now that I have that done. I will just have to remember to update this report if I add any new ticket types.