But... in no less than two situations this option is useful: backfilling additional bars soon after settings change (any time you enlarge 'variety of bars to load' in File->Database Settings dialog you have to pressure backfill for symbols that were backfilled previously with lesser amount of bars) Choosing the right https://data-feed-for-amibroker85308.blogunteer.com/34129439/the-basic-principles-of-amibroker-data-feed