Make manual or gradeset entry and applying a transpose value editable within columns

Please can creating and editing columns in gradebooks allow for 'undoing' errors in thse simple ways:

1. Whether a column is manual entry or draws from a gradeset should be editable until data is entered - you shouldn't need to create the column from scratch if you want to apply a gradeset element.

2. Equally, at the moment, if I accidentally click on a transpose value when creating or editing a column, I cannot then avoid selecting a transpose value. There is no option that allows me to 'unselect' a transpose value and I have to delete the whole column and create it from scratch if I have erroneously created a column with that value.

These simple changes would really improve functionality.

Thank you.