How to update calculation without updating previous records

Discussion created by chito on Feb 27, 2016
Latest reply on Feb 28, 2016 by chito


I'm trying to update a rounding calculation from 2 decimal to 0 but I don't want my previous records to update.  How would I do that? The current calculation is:

Round(TariffRounded + TariffDiscountAmount + BCity1Amount + BCity2Amount;2)


Thank you in advance.