Import Aux1 or Aux without append record(s)

I am trying to update aux2 field as tag for earning date to plotshapes on earning date, Import using ascii import adding $hybrid 1 and allow -ve quote, Data imports successfully, but in weekends or on holidays record appended on OHLC field as -1000000000000.
Is there any way to stop append the record and update only existing data ?

I tried above linked method but need to scroll through all symbols to update the records

-1e10 is NULL (Empty) value.
There are no quotes normally on weekends and holidays. You are doing something wrong, or you turned on padding.

Thank you for replying, I checked and found that, earning dates on non-trading days append the record on aux2 field as programmed and rest of the field ohlcv as -1e10.

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