Deliveries + Inventory DAX Measure

This is the closest I have gotten:
Deliveries are being taken into account - stock is being taken into account - all works except:
The order data pieces are being put into the first month - not the right month. 

_mProjected+Deliveries_test = 
VAR AvailableDate = EOMONTH(TODAY(), -1) + 1

// Get the list of delivery dates that are active and related to the '_Calendar' table
VAR ActiveDeliveryDates =
    CALCULATETABLE(
        VALUES('Order Data'[Delivery_month]),
        USERELATIONSHIP('_Calendar'[Date], 'Order Data'[Delivery_month])
    )

// Find the maximum delivery date to consider deliveries up to the maximum date
VAR MaxDeliveryDate =
    CALCULATE(
        MAX('Order Data'[Delivery_month]),
        ALL('Order Data'),
        USERELATIONSHIP('_Calendar'[Date], 'Order Data'[Delivery_month])
    )

// Filter the '_Calendar' table to include all months from AvailableDate up to MaxDeliveryDate
VAR CumulativeDeliveries =
    FILTER (
        ALL ( '_Calendar' ),
        '_Calendar'[Date] >= AvailableDate
            && '_Calendar'[Date] <= MaxDeliveryDate
    )

// Calculate the total deliveries for all months in CumulativeDeliveries
VAR Deliveries =
    SUMX (
        CumulativeDeliveries,
        CALCULATE (
            SUM ( 'Order Data'[Total Pieces] ),
            USERELATIONSHIP('_Calendar'[Date], 'Order Data'[Delivery_month])
        )
    )

// Calculate the current month's quantity
VAR CurrentMonthQty =
    CALCULATE(
        SUM('Stock Data'[Quantity Available]),
        FILTER(
            ALL('_Calendar'),
            YEAR('_Calendar'[Date]) = YEAR(AvailableDate) &&
            MONTH('_Calendar'[Date]) = MONTH(AvailableDate)
        )
    )

// Calculate the number of remaining months from AvailableDate to the minimum date in '_Calendar' table
VAR MonthsDiff =
    DATEDIFF(AvailableDate, MIN('_Calendar'[Date]), MONTH)
VAR RemainingMonths = MAX(0, MonthsDiff)

// Calculate the RunRate and use it as a negative value (decrease)
VAR RunRate = -1 * CALCULATE(
    SELECTEDVALUE('Stock Data'[Run Rate]),
    ALLEXCEPT('Stock Data', 'Stock Data'[SKU Title])
)

// Calculate the projected quantity based on the deliveries, current month's quantity, and RunRate
VAR Calc = CurrentMonthQty + Deliveries + (RunRate * RemainingMonths)
RETURN
    ROUNDUP(Calc, 0)