Ok, ignore that...I found my answer.
Apparently ADODB.Stream for reading the file is terrible in this code.
This worked much much much better:
function ansiToUtf8(fileName) {
var indir = "ansiin";
var outdir = "utf8out";
var ansi = WScript.CreateObject("Scripting.FileSystemObject");
var utf8 = WScript.CreateObject("ADODB.Stream");
utf8.Open();
utf8.Charset = "UTF-8";
utf8.WriteText(ansi.OpentextFile(indir+"\\"+fileName,1,false,false).ReadAll());
utf8.SaveToFile(outdir+"\\"+fileName, 2 /*adSaveCreateOverWrite*/);
utf8.Close();
}
MM
select geometry::STGeomFromWKB(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