TVM but WTF?

A supplier tells us they have a procurement process “from EOI to BAU”.

EOI = Expression of Interest.

BAU = …?

Binned and Unread?
Broken and Unmaintained?
Bugger All Use?
Bold and Underline?
Bloody Awful Users?
Bored and Underwhelmed?
Baryonic Asymmetry of the Universe?
Beirut Arab University?

Why people can’t speak in clear English Baffles All Understanding.