True for Microsoft Word to save new Web pages using the Web Archive format. Read/write Boolean.
expression.SaveNewWebPagesAsWebArchives
expression Required. An expression that returns a DefaultWebOptions object.
Setting the SaveNewWebPagesAsWebArchives property won't change the format of any saved Web pages. To change their format, you must individually open them and then use the SaveAs method to set the Web page format.
This example enables the SaveNewWebPagesAsWebArchives property so that when Web pages are saved, they are saved using the Web Archive format.
Sub SetWebOption()
Application.DefaultWebOptions _
.SaveNewWebPagesAsWebArchives = True
End Sub