"Solve for Max is Gone?"
I can't find the "Solve for Max" function anywhere on my return scenario.
That's intentional. Static scenarios generated from an uploaded tax return won't have the "Solve for Min/Max" or "Range Calc" function because they've already happened.
To access those functions, create a copy of the tax return scenario and make expected income changes for the year in question. The "Solve for Min/Max" and "Range Calc" will then appear.