Switch between two date options based on Filter

Hi Sam7 ,

I created a sample pbix file(see attachment) for you, please check whether that is what you want.

1. Create two date dimension table base on the fact table

Note: Do not create any relationship between these two date dimension tables and fact table

2. Apply the date field in above tables on the slicers

3. Create the measures to get the values during the selected date periods

qty = 
CALCULATE (
    SUM ( 'Table'[quantity] ),
    FILTER (
        'Table',
        IF (
            ISFILTERED ( 'Shipped date'[date] ),
            'Table'[shipped date] >= MIN ( 'Shipped date'[Date] )
                && 'Table'[shipped date] <= MAX ( 'Shipped date'[Date] ),
            1 = 1
        )
            && IF (
                ISFILTERED ( 'Order date'[Date] ),
                'Table'[order date] >= MIN ( 'Order date'[Date] )
                    && 'Table'[order date] <= MAX ( 'Order date'[Date] ),
                1 = 1
            )
    )
)

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

How to upload PBI in Community

Best Regards