: This could be the problem. This is query is machine generated, so I don't : care how ugly it is. Does this apply even to inner queries? I.e., should : that last clause be (*:* -i_4:6142E=m") instead of (NOT I-4:"6142E=m")?
yes -- you can't exclude "6142E=m" w/o defining what set (ie: the set of all documents: *:*) you are excluding it from. Related reading about building up nested queries with parens and using the AND/OR/NOT syntax... http://www.lucidimagination.com/blog/2011/12/28/why-not-and-or-and-not/ -Hoss
