If you use File > New from Template, any text overrides in Text Frames on Page Templates will be preserved exactly as you set them.
If you use the Hub > Create New, which allows you to set the Project Title and Composer, some text overrides in Text Frames on Page Templates will not be preserved. These include horizontal alignment.
Either don’t use Create New from the Hub, or set up Paragraph Styles that do exactly what you want, rather than setting text to have any old Paragraph Style and then override it in the Page Template Editor.