Description:
Hello everyone,

First of all, I tried the following operation with the Writer v6.0.7, v6.1.2 and v6.1.3. The problem does not occur in the 6.0 version but in the 6.1.x versions indeed.

So, there is a problem with the Tools - Outline Numbering in the last LibreOffice Writer.

When I try to numbering different level of titles, it is always the last modification which is saved but not the entire configuration. So at the end, I can number only one heading style.

Thank you for reading.

Steps to Reproduce:
1. Choose Tools - Outline Numbering, and then click the Numbering tab.

2. Choose plan level 1 from the left column.

3. In the Paragraph Style box, select the desired heading style (+ some options)
----Paragraph Style: Title 1
----Number: 1, 2, 3...
----Sublevel: 1
----After: .

4. Choose plan level 2 from the left column.

5. In the Paragraph Style box, select the desired heading style (+ some options)
----Paragraph Style: Title 2
----Number: 1, 2, 3...
----Sublevel: 2
----After: .

6. Choose plan level 3 from the left column.

7. In the Paragraph Style box, select the desired heading style (+ some options)
----Paragraph Style: Title 3
----Number: 1, 2, 3...
----Sublevel: 3
----After: .

8. Validate

Actual Results:
My level 1 title
My level 2 title
1.1.1. My level 3 title

Expected Results:
1. My level 1 title
1.1. My level 2 title
1.1.1. My level 3 title


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: fr
Module: TextDocument
[Information guessed from browser]
OS: Linux (All)
OS is 64bit: yes

Version: 6.1.3.2
Build ID: libreoffice-6.1.3.2-snap1
Threads CPU : 4; OS : Linux 4.18; UI Render : par défaut; VCL: gtk3; 
Locale : fr-FR (fr_FR.UTF-8); Calc: group threaded