Hello:

I initially created a field in the Opportunity Standard Layout that is calculated based on the contents of other fields.  I have been asked to break this field into two different fields (calculating each field based on specific fields). 

I reused the initial field and created a second field.  However, records created before the change do not have the new format -- or calculated value.

Is there a way to force the previous records to update to the new format?  Or, do we need to re-enter the opportunities?