I've noticed that when historical data isn't available, I don't seem to get any visible errors/warnings on a backtest. It just runs, and comes back with a nonsensical response (usually showing no trades).
That's the benign case. I had a less benign case, where I originally ran the backtest with the "wrong" start-date (and historical data was fetched). I later adjusted the backtest by one day to the correct start-date I had in mind... and the analyzer never re-fetched historical data starting from the new date. It just skipped the first date, and only used the historical data on hand.
I've now figured out to regularly close the Analyzer, and make sure I'm truly connected from the control center.
But is there something I can keep an eye on where warnings/alerts about unavailable historical data is being generated? Any rules of thumb on how/when I need to actively reload historical data?
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