I think you mean that you made an entry in box 20 for code E and you want to remove that entry. If so, just edit the K-1 entry and when you get to the box 20 entry, click on the down arrow next the code e entry, then move the cursor on the right all the way to the top and you will see the first row is blank, and when you click on the blank entry it will erase the code. Then, delete any number that may be in the column to the right of the entry you just removed.
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