IMPORTANT: 11dx.net files are participant logs. IRDX Logger is primarily designed for organizer/event logging.
Use this import only if you intentionally want participant contacts in this system.
Default event is DX11.net. Operator is resolved from global callsign database; if not found it becomes DX11-UNKNOWN.
QTR date/time is converted to UTC timestamp and prg number is auto-incremented from the latest value of the target event.
Test: NOT TESTED
Default is strict mode: any invalid row blocks import until fixed.
Event fallback is only needed if your file does not provide an event field.