But... in at the least two circumstances this option is helpful: backfilling additional bars soon after options alter (after you enlarge 'amount of bars to load' in File->Database Options dialog you have to drive backfill for symbols that were backfilled previously with scaled-down variety of bars) Regardless of whether you https://reidopnnk.blogocial.com/the-basic-principles-of-amibroker-data-feed-70914491