Sysadmin Usage table doesn't track column-level usage by a virtual procedure

    <model name="insideVirtualModel" type="VIRTUAL">
        <metadata type="DDL">
            <![CDATA[
                CREATE VIEW v1 (v1col string) AS SELECT 'a' UNION ALL SELECT 'b';
                CREATE VIEW v2 (v2col string) AS SELECT v1col||'b' FROM v1;
                CREATE VIRTUAL PROCEDURE p1() RETURNS (p1col string) AS
                BEGIN
                    SELECT v2col FROM v2;
                END
                CREATE VIEW v7 (v7col string) AS SELECT p1.p1col FROM (CALL p1())AS p1;
                ]]>
        </metadata>
    </model>
    <model name="dependentOnPhysicalModel" type="VIRTUAL">
        <metadata type="DDL">
            <![CDATA[
                CREATE VIEW v3 (v3col string) AS SELECT t1col||'b' FROM t1;
                CREATE VIEW v4 (v4col string) AS SELECT p.p2col FROM (CALL p2(1)) AS p;
            ]]>
        </metadata>
    </model>

SELECT * FROM SYSADMIN.Usage WHERE VDBName='vdbname' AND SchemaName='insideVirtualModel' AND Name='p1' AND object_type='Column' AND Uses_object_type='Column'