I am a heavy user of Sheets and use advanced sorting by multiple columns all the time, but if I need to view HOW the range is ALREADY sorted or MODIFY the sort in any way, I cannot do it. I always have to re-enter all the sort criteria from scratch, making the desired changes.
I hope that I am just unaware of the method for doing this. I am less familiar with Sheets than Excel, so I sometimes don't realize that Sheets may provide a very different way to do things I commonly do in Excel.
I have searched for hours trying to find any info that leads me to think others have encountered this issue and can provide me with the proper method. I find no one even discussing the issue, so perhaps I am totally on the wrong track.