Problem to edit a XML file - index_en.xml

[Andre]

Hello

I have a strange problem. If I open a XML with notepad, everything is correct.
When I open the same file with Dreamweaver, the file is modified.

You can see the difference (see file attachment).

Open with dreamweaver and try to find the tag 'content_category_r'

you find:
<content_category_r>
<content_category>
</content_category>
<content_category>Scientific research.</content_category>
<content_category>The competent already on the market.</content_category>
</content_category_r>

with notpad you have:

<content_category_r>
<content_category>08012624813c7847</content_category>
<content_category>080126248149df7e</content_category>
<content_category>0801262481993b5a</content_category>
</content_category_r>

How can I resolve the problem

Thank you for your support
Best regards
Andre