When we import the history data from a file into SQ, we can save some file format as default or custom file format.
But we can not edit, delete the predefined file format.
It's more convenient that we could manage the predefined file format absolutely.
Add new file format, edit or modify the predefined format, delete the predefined format.
Yes, we can set the predefined format.
But it can't be changed or deleted. When we want to modify it, it can only saved as a new name now.