Averages not updating when Visualization Filter applied

Hi AliceInChains,

I haven't see the meandays measure in your screenshot, please add ALLSELECTED(Table) in your formula to create a measure rather than calculated column and check if it works fine.

MeanDays =
FORMAT (
    INT (
        (
            AVERAGEX (
                ALLSELECTED ( 'Property and Admin Unit' ),
                'Property and Admin Unit'[nDays]
            )
        )
            / 365
    ),
    "000"
)
    & " Years "
    & FORMAT (
        INT (
            DIVIDE (
                MOD (
                    (
                        AVERAGEX (
                            ALLSELECTED ( 'Property and Admin Unit' ),
                            'Property and Admin Unit'[nDays]
                        )
                    ),
                    365
                ),
                30
            )
        ),
        "00"
    )
    & " Months "
    & FORMAT (
        INT (
            MOD (
                MOD (
                    (
                        AVERAGEX (
                            ALLSELECTED ( 'Property and Admin Unit' ),
                            'Property and Admin Unit'[nDays]
                        )
                    ),
                    365
                ),
                30
            )
        ),
        "00"
    )
    & " Days"

Please respond to us if you have any other issue.

Best Regards,
Angelia