Net gain in TurboTax does not match imported 1099B form

I have a 1099B form which shows a net gain of X for short-term, field A, form 8949... but when I import the form into TurboTax it shows a net gain value 6 times this value.  Any ideas how this can happen?  I am a high volume trader and I wonder if it did not import correctly but I'm not sure what I can do to try and fix it (other than going trade by trade... which is not an option as there are too many trades to process one by one).

 

Thanks for any ideas.