Combine documents makes duplicate word

[vincelge]

Hello,
I've a problem with the Combine function. I'm working with Office Pro Plus 2010.
I create a word doc (I have the problem with a 2003 and 2010 extention file). I make some deletions in "Track changes" mode (I don't know if it's the exact words. I'm french and it's calles 'Suivi des modifications').

I save and close the file and duplicate it.
In this new file, I accept all the modifications.
I execute the combine function of my 2 files. There are no differences between these 2 files but each time I have a deletion, the word just before is duplicated.

For exemple, if I have:

You have to do this before that (the underlined words are deleted in word) in the first document, I automatically have You have to do this in the second document.

In my combined document, I have:
You have to do thisthis.

Is anybody knows where the problem is ?

All my setences with deletion are in this case.
The added parts of sentences seem don't have the same problem.

How can I do for keep my changes history, and not have duplicates word?



Thanks for your help!

Vincent