@action
    applySoftFilter(filterStr, filters) {
        this.softFilters = filters;
        this.softFilterParam = filterStr || null;
        let {label, paidParam, searchParam, orderParam} = this;
        this.fetchMembersTask.perform({label, paidParam, searchParam, orderParam, filterParam: filterStr});
    }
Already start filtering when the user is editing a filter, without applying it to the URL yet,
and to still allow a cancel action to revert to the previous filters.