Byron,
This is not just "i," string :o)))

It contains a nine non printable chars, You must do the following:

MyFileAsString = FILETOSTR("D:\switch\from\2005Ch041119.001")
mybadChars      = CHR(161)+CHR(7)+CHR(130)+CHR(5)+CHR(3)+CHR(26)+CHR(16)+CHR(3)+CHR(2)  && You can see the with some HexEditor or Viewer
STRTOFILE(STRTRAN(MyFileAsString, mybadChars, SPACE(9), "Ch041119.new")

but If You Want to remove ALL non printable chars the best way is

MyFileAsString = FILETOSTR("D:\switch\from\2005Ch041119.001")

FOR myC = 0  TO 31 && All Non printable Chars
    MyFileAsString = CHRTRAN(MyFileAsString, CHR(myC)," ")
NEXT

this will leave You some chars as CHR(161) and CHR(130) and will remove CRLF - CHR(13)+CHR(10), but I am sure You will manage this :o)))

I hope this will helps You.