I added custom metrics to my backtesting report, but the column headings don't show up in the backtest report, although they do show up in the trade list in the Analysis window.
Is this a known issue or did I do something wrong (which would not surprise me)?
The way this HTML table is produced prevents custom columns captions. You can however Ctrl+C (copy) directly from Result list and paste to Excel, or use File->Export HTML menu in AmiBroker and you will have those custom columns. http://www.amibroker.com/kb/2014/12/10/copy-backtest-result-to-excel/
Great, thanks Tomasz. I've been using the copy/paste directly from the trade list but I'm glad to know about the ability to copy/paste from the report table.