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 check number of bars to load settings in file, 
database settings and in tools, preferences, data... 
  ----- Original Message -----  
  
  
  Sent: Friday, May 12, 2006 11:12 PM 
  Subject: [amibroker] IB backfill also 
  delete some past data? 
  
  Every time I update historical data (1 minute) using IB 
  backfill there  will be new bar in my chart (which it should be), but 
  unexpectedly it  will also get rid of some of the oldest bars.
  I 
  expect IB backfill will add new bars without deleting any previous 
   historical data.I don't know whether it is because of my setting or it 
   is how AB works. Any explanation on this will be appreciated, 
  thanks.
 
 
 
  
  
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