Rekordbox 6 - iOS app Edited Beat Grids

The beat grids that are manually edited in the iOS app (up to ver. 3.1.1.0 at this point) will not carry over or sync back to my PC database (windows 10).   Only Cues (Memory, or Hot), that are added in the iOS app, sync back.  

It has been this way since Rekordbox 6 was released, up to the latest version of the iOS app, initially through an iPhone X, and currently on my iPhone 11.

So why does my iOS edited Memory and Hot Cues sync back to Rekordbox 6, BUT NOT my iOS edited beat grids?!