Fiscal YTD when using MAX

lbendlin ,
I've uploaded sample data into excel, please confirm if you need it to be in Power BI then I can do so.

https://docs.google.com/spreadsheets/d/1n3mlaRA-1vnI3McwZbTkR39vNBcnxhZ-/edit?usp=sharing&ouid=101669885059815625932&rtpof=true&sd=true

1. I would like to see if my DAXis correct for getting the Total Budget Amount, thus far it has given me the correct result per month when using a date slicer, it also rolls up to the 'section' columns level so I can compare for Example Revenue with Amount and Buget for example. (You will notice the difference in granularity between column section and Budgetamount)

DAX

BudgetAMT_Max = MAX(factGLTransactions[Budget_Amount]) 

BudgetAMTDistinctTotal = SUMX(DISTINCT(factGLTransactions[Account]),[BudgetAMT_Max])

This will will be similar as in TSSQL to get the correct Budget Amount

SELECT 
	section, 
	SUM(DISTINCT BudgetAmt) AS TotalBudget
FROM Table

WHERE TxDate BETWEEN '2023-03-01' AND '2023-03-31' AND section = 'Revenue'

GROUP BY section

If all the above is correct the I would like to create YTD Budget Amounts like I would normall do using the following.

Current Budget YTD Fiscal =
VAR YearStartMonth = 3
VAR YearStartDay = 1
VAR MaxDate =
    MAX (dimDates[Date])
VAR MaxYear =
    YEAR ( MaxDate )
VAR YearStartDateThisYear =
    DATE ( MaxYear, YearStartMonth, YearStartDay )
VAR YearStartDateLastYear =
    DATE ( MaxYear - 1, YearStartMonth, YearStartDay )
VAR YearStartDateSelected =
    IF (
        YearStartDateThisYear <= MaxDate,
        YearStartDateThisYear,
        YearStartDateLastYear
    )
RETURN
    CALCULATE (
        [BudgetAMTDistinctTotal],
        DATESBETWEEN ( dimDates[Date], YearStartDateSelected, MaxDate )
    )

Currenly it is not giving the correct result. 

Please let me know if you require any additional information, alternatively I will revert back to SQL maniplulate the data . 

Kind regards