You can easily see whats been changed on the HEAD and oacs-4-6 branches
at
http://dev.openacs.org:8000/cvs/openacs-4/packages/survey/?sortby=date&only_with_tag=HEAD
and
http://dev.openacs.org:8000/cvs/openacs-4/packages/survey/?sortby=date&only_with_tag=oacs-4-6
I looked at bug 1790 specifically, and Dave had fixed part of it but
there was a small mistake in survey_section__remove (which I think I fixed but did not test -- I did submit and commit a patch for it).