In event pickers, incrementing START date by START date in user-specific columns seems to be an option. It clears the picker but the values remain in the data editor. That happens in other situations but typically when you click into the cell, you’ll see the “true” value after incrementing.
I’m not sure how something can be incremented but not incremented. If this is meant to work, then there’s potentially a path forward to clearing user-specific values in event pickers after selection.
Post increment, values still in GE: