Issue with sparse checkout

I wonder if you can advise me if this is a bug with sparsecheckout, or if not what I'm doing wrong:

http://pastebin.com/HUaWrtef

Basically, I believe that when I do git read-tree, I should be left with only
the directory CONFIGURATION.

However, DV_TDM remains.   But it's status seems to be "indeterminate" from
git's point of view - it neither reports it as being an untracked nor as being
deleted when I delete it.   FWIW, that directory contains a folder which
contains files.

I also tried a simpler sparsecheckout file, with just
/CONFIGURATION

in it, but this was worse: it left DV_SERVICES in place as well.

Thanks for any advice.

This is git 1.8.3.msysgit.0

Martin