But... in at the very least two scenarios this selection is useful: backfilling a lot more bars soon after configurations change (once you enlarge 'variety of bars to load' in File->Database Configurations dialog you have to force backfill for symbols that were backfilled Formerly with more compact amount of bars)Whether you decide for any premium

But... in not less than two scenarios this selection is beneficial: backfilling far more bars soon after options modify (once you enlarge 'quantity of bars to load' in File->Database Settings dialog you have to drive backfill for symbols which were backfilled Formerly with smaller sized number of bars)Choosing the right amibroker data feed provider