Então eu encontrei uma maneira de Altere todas as instâncias de um estilo de uma vez com o painel Formatação e Estilos do Word
- Select the first section heading.
- Go to View | Task Pane; click the drop-down arrow at the top of the pane, and select Styles And Formatting. (In Word 2007, click the dialog launcher box in the Styles group of the Home tab.)
- Right-click the highlighted style for the selection (in this example, Heading 1 is highlighted.)
- Click Select All xx Instance(s). In this example, there are three instances of this style
Word selects all instances of the Heading 1 style throughout the document. You see that all three instances are applied to your section headings, and you would like to change the style to Heading 2. To change all three instances, click Heading 2 in the Task Pane