Matrix, sort column by date, index not working for 1 section

[BeidiWang]

in this screen shot, i need 1st Q to show months as secondary layer, months should be sorted by my index which is table, only the 1st Quarter not sorted properly, rest of quarters are good. this list  below has already been sorted by "label index column". any suggestion to fix this??

LabelLabel Index

1st Q	1
11/1/2020	2
12/1/2020	3
1/1/2021	4
2nd Q	5
2/1/2021	6
3/1/2021	7
4/1/2021	8
3rd Q	9
5/1/2021	10
6/1/2021	11
7/1/2021	12

[BeidiWang · Accepted solution]

i just answered my own question, the month order is sorted automatically by calendar, because month display is from date hieracy-month in calendar table., solution is to display the year hieracy as well- although this will add more subtotal on columns, but that is another question. 

[amitchandak]

@BeidiWang , I doubt the Sort column is saved correctly. Please check that.

[BeidiWang]

sort column index table has been saved corrected and refreshed to PBI report. anything else you suggest me checking?