After uploading a Document template to a KB article record as per the doc link: When importing a Word document to a knowledge base, the font styles such as italics, colors, bold are not shown like in the original document.
In reference to our Knowledge Management functionality, when uploading a .doc or .docx Word template, there are limitations on styling for the files as Microsoft does contain a lot of unsupported styling tags that will be stripped away by the systems HTML Sanitizer.
The size of the fonts are supported up to a certain limit that is set by the HTML Editor which is TinyMCE as our latest version.
Styles and elements not included in this list may not be preserved when importing a document:
Ordered and unordered lists
This is expected behaviour and if the the exact identical formatting is intended, then we recommend not to rely on templates based on a Microsoft Office document due to this limitation.