It was suggested that I pose my question here. When I try to modify a comment which had been saved on an Excel (2016) spreadsheet. I can't . I :
1. Select the cell that contains the comment that I want to edit.
2. On the Review tab, in the Comments group, I click Edit Comment.
3. I then double-click the text in the comment ; however I cannot change the comment . Instead my initials pop up in the comment forcing me to add a new comment
4. I then can only delete the comment and start again