Lossless XMI 2.1 export of the model root per BUILD-CHECKLIST 5.1 /
model README option 2. The COM path stays broken in this EA 15 build
(ExportPackageXMI typelib declares its filename parameter as Object -
no string marshals in, verified across PowerShell/JScript/VBScript and
arities 2-6; ExportProjectXML returns false silently); the manual UI
export is the documented fallback for this machine.
