are you using ASP as the server language, I just noticed in the source for one of the DA files, it is forcing iso-8859-1 for asp pages.
look in:
configuration/Shared/WebAssist/ApplicationBuilder/AppBuilder_Object.js
try changing line 1053-1069
if(this.docType == 'ASP-JS'){
var dom = WA_getDocumentDOM( WA_getConfigurationPath('/DocumentTypes/NewDocuments/Default_JS.asp'));
dom.setCharSet('iso-8859-1');
dom.documentElement.outerHTML = dom.documentElement.outerHTML.replace(/charset="/, 'charset=iso-8859-1"');
updatePageDirective(dom);
}else if(this.docType == 'ASP-VB'){
var dom = WA_getDocumentDOM( WA_getConfigurationPath('/DocumentTypes/NewDocuments/Default_VB.asp'));
dom.setCharSet('iso-8859-1');
dom.documentElement.outerHTML = dom.documentElement.outerHTML.replace(/charset="/, 'charset=iso-8859-1"');
updatePageDirective(dom);
}else{
var dom = dw.getNewDocumentDOM();
}
to:
if(this.docType == 'ASP-JS'){
var dom = dw.getNewDocumentDOM();
}else if(this.docType == 'ASP-VB'){
var dom = dw.getNewDocumentDOM();
}else{
var dom = dw.getNewDocumentDOM();
}