I thought I had just downloaded two weeks worth of tick data for an instrument from Interactive Brokers, but when I checked in the "Edit" tab, I couldn't see the new data.
I had data up until 2 weeks ago but now the whole of November for "Last" prices is missing.
The data for bid and ask are there but only up until two weeks ago with no sign of a new download. So I have 2 questions:
(1) Does the Historical Download Manager refuse to download data for a price type e.g. Last if the data for that instrument doesn't end on the start date for the download? Or is it happy to leave gaps in the data if that's what I deliberately or accidentally specify?
(2) if I download data that is already in the Historical Data Manager, is that data written over item for item, or is the whole lot deleted before the download, even if the requested data isn't available or an error in the download occurs?
Thanks
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