From this window, you can modify the rate detail records.
Double-click the field (cell) you want to change.
Make the change.
Move to another cell.
When all records have been changed, select Append to add the changed records to the rate plan (if the Distance Type, Rating Method, and Location are the same as an existing record, you will get an error).
OR
Select Overwrite to replace existing records (the RateDetailIDs of the new rate details must be the same as the existing rate details, if they are not, the records are added with new RateDetailIDs).
Click Import to update the Rate Details window and close the Import/Export window.