But... in at the very least two conditions this option is helpful: backfilling much more bars immediately after settings adjust (when you enlarge 'variety of bars to load' in File->Database Configurations dialog You need to pressure backfill for symbols which were backfilled Formerly with scaled-down number of bars) Reliable data https://datafeedforamibroker32086.qowap.com/94251641/the-2-minute-rule-for-amibroker-data-feed