Replace all pairs of paragraph marks in the active document, you could search for ^p^p and replace it with ^p

 
Sub replace()
    ActiveDocument.Content.Find.Execute FindText:="^p^p", ReplaceWith:="^p", _
        replace:=wdReplaceAll
End Sub

1.	Save document as
2.	Defining a Named Range
3.	Uppercase the first three words at the start of a document
4.	Using the Duplicate Property to Store or Copy Formatting
5.	Turning Off Track Changes
6.	Declare the HeaderFooter object variable myHeader and assign to it the primary header in the first section in the active document:
7.	Checking to See if a Header or Footer Exists
8.	Linking to the Header or Footer in the Previous Section
9.	Creating a Different First-Page Header
10.	Opening a New Window Containing an Open Document
11.	Closing All Windows but the First for a Document
12.	Active document paragraph
13.	Save active document
14.	Activate window by name

Replace all pairs of paragraph marks in the active document, you could search for ^p^p and replace it with ^p : ActiveDocument « Word « VBA / Excel / Access / Word