Robohelp 9 .properties file inserting non-printable characters @ export

I have a mapped help file that I am generating for integration to an online application. When we export the .properties file from the Project Set-up pod, the mapped files appear to be fine, if viewed in Notepad (see below).
However, when this is viewed in a different text editor, you can see that RoboHelp added additional non-printable characters to the .properties file (see below).
We've tried generating this from different computers, exporting it to different locations, retyping the initial entry, and haven't found a solution to this issue.
Does anyone know if there is a fix available? Are we doing something wrong?
Thanks!!
Kelly

Ask your developers if they think these characters could be what are known as BOM (byte order marks).
That is something can be seen in some files using the default encoding. There it can be changed by changing the encoding in the SSL dialog.
Maybe that explains it and if that is the cause, I don't know how you would prevent it here in Rh. I think you will have to live with your own solution.
See www.grainge.org for RoboHelp and Authoring tips
@petergrainge

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