Measure with switch - incorrect totals

I solved the problem using this measure instead:

BS Act GC = 
VAR BalanceSheetVirt =
    ADDCOLUMNS (
        CALCULATETABLE (
            BalanceSheet,
            FILTER ( ALL ( 'Calendar' ), 'Calendar'[Date] <= MAX ( 'Calendar'[Date] ) )
        ),
        "Rate Month End",
            LOOKUPVALUE (
                'Exchange Rates'[Amount],
                'Exchange Rates'[Currency], BalanceSheet[BaseCurrency],
                'Exchange Rates'[Month], MAX ( 'Calendar'[MonthStartDate] ),
                'Exchange Rates'[FX_Type], "Month End"
            ),
        "Rate Historical",
            LOOKUPVALUE (
                'Exchange Rates'[Amount],
                'Exchange Rates'[Currency], BalanceSheet[BaseCurrency],
                'Exchange Rates'[Month], BalanceSheet[Date],
                'Exchange Rates'[FX_Type], "Month End"
            )
    )
RETURN
    SUMX (
        BalanceSheetVirt,
        IF (
            VALUE ( BalanceSheet[FxTypeNumber] ) = 1,
            [Amount_LC] / [Rate Month End],
            [Amount_LC] / [Rate Historical]
        )
    )