Mystery Characters in Export File

[MackyMoto]

This one has me scratching my head. In this case my data comes from the UK in the form of an Excel file. The files are most probably generated from a Windows machine. I process the files using FMPro9 on a Mac and then export them as tab separated .txt file with the data formatted as Windows (ANSI). The vendor I send the files to uses Windows machines and has found that this round of files contains a small percentage of records that contain a lower case a with an accent (or perhaps grave). I don't see that character in either the .txt file I exported or in my FMPro file or in the original Excel file. I do see that the afflicted records have what looks like a space character in the same position. Anyone know what this is or how I can get rid of it?

[comment]

It's probably some non-printing control character. Hard to say more without seeing at least one of the files.

See also:

http://fmforums.com/forum/showtopic.php?tid/187935/

http://fmforums.com/forum/showtopic.php?tid/193366/