DITA2Go can output character formats as Word character styles, instead of as overrides. This is sometimes difficult for Word to handle, however, so use this feature only if you anticipate needing to revise the Word text:
[WordOptions]
; CharStyles sets char properties in styles (causes problems with WP)
CharStyles=Yes
; CharStylesUsedInText = No (default); or Yes, use cs codes in text
CharStylesUsedInText=Yes
Style names only, not properties
Be aware that if DITA2Go does not output style properties explicitly, they do not appear in Word. That is, the style name appears, but the actual properties are all Word defaults. That is why DITA2Go puts out overrides: there is no choice, in Word.