But... in at the least two situations this feature is beneficial: backfilling a lot more bars following settings change (when you enlarge 'range of bars to load' in File->Database Configurations dialog You need to force backfill for symbols which were backfilled Beforehand with scaled-down variety of bars) The data feed https://amibroker-data32075.ssnblog.com/34206855/5-essential-elements-for-amibroker-data-feed