ran into a couple of things that drive me crazy in current version of Lightroom. #1- Library & Slideshow modules pix look less sharp than Develop module; #2- LR Mobile does not track the sort order that synched Desktop version has (only sort by date available in Mobile.)
Yes, I finally did that, yesterday and it worked, thank you. Not logical (since there is an arrow for choosing ascending or descending sort which usually means it might be a drop-down menu for the other options). BTW, I talked to Adobe's CC phone support and they weren't aware of this either (they thought there was only one option also!) Nice find!