I remember building some software to do this last year sometime, the source codes not on this computer but it should be on a backup external drive at home.

Let me know if you are using a windows pc and i'll grab it for you when I get home later if you want..

There has been tools to do this for ages.

Are you on a Mac or do you have access to a Linux machine?

It is called sed. Sed - An Introduction and Tutorial

Here is how you would do it on the terminal:
1. place all the text files into a single directory.
2. type in "sed "s/'Article Body:'/''/g" *.txt"

tada your done.

[DELETED]

Surely you want the article title too?

This is a trivial job in PHP. You can get that done on Fiverr probably.

HTH

Glenn

Another way of doing it is by using Autoit - AutoIt - AutoItScript
I've found this a really easy way to do basic things like this - without having to fire up Visual Studio, etc.. to use something more full on like C#

Ultraedit has very fast search and replace with regular expressions