One issue we always face is that if I have a custom report where i’m trying to show both Yesterday and Month to date, I can set both ranges to work independently as “Yesterday” and “Current Month”.
However if I run the report on the 1st August I would get 31st July in the Yesterday part and 1st August as the Current Month.
If I build the report today as Previous Month to make it work, tomorrow I’ll get 1st August in the Yesterday section but July in the Month section.
Systems I’ve used in the past allow you to pick Yesterday as the base, but then use Parent as the basis of the filter. Hence I could say use Yesterday but go up a level to Month and use that month, rather than forcing to a fixed Current or Previous.