But... in at the very least two circumstances this option is useful: backfilling more bars after settings improve (after you enlarge 'range of bars to load' in File->Database Configurations dialog It's important to pressure backfill for symbols that were backfilled previously with smaller range of bars) The data feed is https://data-feed-for-amibroker86420.fireblogz.com/66417465/a-review-of-amibroker-data