Problem description: 
Since I can't show numbering on heading style, I decide to create custom heading style which has numbering options enabled. 
I think the numbering hierarchy is work automatically as I change the heading level. But it looks not.

m.c = my case.
Steps to reproduce:
A. Create custom numbering format (m.c. Chapter numbering)
A.1 Adjust position and spacing : m.c. from level 1 - 3 has same value of alignment.
A.2 Adjust numbering (Same all levels): Character style: Numbering symbol, Start at 1
A.2.a Level 1 : Number: A,B,C. 
A.2.b Level 2 : Number: Native numbering. Show sublevels : 2
A.2.c Level 3 : Number: a,b,c. Show sublevels : 3
B. Create Custom heading for paragraph style (m.c.Chapters)
B.1. Create Heading (m.c. Chapter 1)
B.1.a Organizer : linked with : Chapters. Category : Custom Styles
B.1.b Outline & numbering: Outline level : 1. Numbering style: Chapter numbering. Include this in line numbering.
B.2. Create Heading (m.c. Chapter 2)
B.2.a Organizer : linked with : Chapters. Category : Custom Styles
B.2.b Outline & numbering: Outline level : 2. Numbering style: Chapter numbering. Include this in line numbering.
B.2 Chapter 3 is like two above with outline level 3

Current behavior:
A. Ch1 bla bla
  B. Ch1.1 bla bla
  C. Ch1.2 bla bla
D. Ch1 bla bla

Expected behavior:
A. Ch1 bla bla
  A.1 Ch1.1 bla bla
  A.2 Ch1.2 bla bla
B. Ch1 bla bla

On current behavior, I need to specify "move down level in numbering hierarchy" manually to have like expected behavior.

P.S
1. I don't know why the category is change to Conditional styles (point B.1.a)
2. Organizer contains nothing in numbering style.
              
Operating System: Windows 7
Version: 4.2.3.3 release