Created attachment 141175 [details] Simple Docx example As far as I can tell, when LO imports word document with the Subtle Emphasis style, that style will be treated as default, master style. I noticed this issue when I tried to edit a large document. I created a new document and was easily able to reproduce this bug. Steps to reproduce: 1. Open a word doc or docx with Subtle Emphasis style 2. Modify the Subtle Emphasis style with something like adding underline Expected results 1. Only instances of Subtle Emphasis style change. Actual Results 1. All styles inherit the new underline attribute. Only changing the master, Default Style, should change all child styles. For some reason, Subtle Emphasis also has this ability.
Created attachment 141177 [details] Simple doc example. This example shows how other styles are preserved, while the Emphasis styles are lost.
I do not understand what you expect. "Subtle Emphasis" is a character style, and no other style inherits from it in attachment 141175 [details], nor in attachment 141177 [details].
OK, I see the problem. The document I was working on was using a character style as a paragraph style. In Word, when you edit a style it will be smart about selecting the correct type. In LO you have to explicitly select the correct type or you can accidentally edit the default style. This is basically a dupe of https://bz.apache.org/ooo/show_bug.cgi?id=122515 I'll close this as NOT A BUG and open a new enhancement request if I can't find a similar one here.