Date/month not working for Saiku analysis when filtered by year

I have a date dimension with level year, quarter, month. For both quarter and month, I use quarter_number and month_number as ordinalColumn. This schema works well in Saiku analysis with correct order for both quarter and month without filtering. But when I filter year to only 2013 then Saiku analysis result looks wield as below: first the Q1 breaks to two places. Second the month is not ordered.

Anyone has same problem? How to fix it?

Thanks a lot.

	2013
	Q1	Q4		Q1		Q2			Q3
MeasuresLevel	January	October	November	February	March	April	May	June	July	August	September
CNT	1,602	5,582	6,403	1,794	4,605	5,232	3,996	4,560	4,231	4,156	5,378

Schema for the date dimension:

<Hierarchy name="Months" visible="true" hasAll="true" primaryKey="date_key">
<Table name="dim_date_en_us">
</Table>
<Level name="Year" visible="true" column="year4" type="Numeric" uniqueMembers="true" levelType="TimeYears" hideMemberIf="Never">
</Level>
<Level name="Quarter" visible="true" column="quarter_number" ordinalColumn="quarter_number" type="Numeric" uniqueMembers="false" levelType="TimeQuarters" hideMemberIf="Never" captionColumn="quarter_name">
</Level>
<Level name="Month" visible="true" column="month_number" ordinalColumn="month_number" type="Numeric" uniqueMembers="false" levelType="TimeMonths" hideMemberIf="Never" captionColumn="month_name">
</Level>
</Hierarchy>