Implement an option for "Select All Current" in basic filtering.

Implement an option for "Select All Current" in basic filtering for a filter.

When filtering with 2 fields, lets say CustomerNo and Period and showing the sales for a category.
We need a way to select all the current CustomerNo´s showing with the current filtering, then filter Period on another period
but with the same CustomerNo´s from the previous selected period.

When I select Period the CustomerNo filter are filtered since they have no sales, we would like to "Isolate" these customers.
When I use the "Select All" in basic filtering for CustomerNo and unfilter my period the previous filter "Select All" for CustomerNo´s does not stick.