Is it possible that  the new \ifxmlselfempty has reversed its outcome? Or did I something wrong in this MWE?
Here an MWE.

yours sincerely
dr. Hans van der Meer




\startbuffer[test]
<what>
<emptynode value="!empty node!"/>
<notemptynode>!not empty node!</notemptynode>
</what>
\stopbuffer

\startxmlsetups xml:mysetups
   \xmlsetsetup{\xmldocument}{something|emptynode|notemptynode}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:mysetups}

\startxmlsetups xml:emptynode
node=\xmltag{#1}:\crlf
ifxmlselfempty-else-fi:\space
\ifxmlselfempty{#1}
	attribute = \xmlatt{#1}{value}
\else
	content = \xmlflush{#1}
\fi
\crlf
ifxmlselfempty-else-fi reversed:\space
\ifxmlselfempty{#1}
	content = \xmlflush{#1}
\else
	attribute = \xmlatt{#1}{value}
\fi
\blank
\stopxmlsetups

\startxmlsetups xml:notemptynode
node=\xmltag{#1}:\crlf
ifxmlselfempty-else-fi:\space
\ifxmlselfempty{#1}
	attribute = \xmlatt{#1}{value}
\else
	content = \xmlflush{#1}
\fi
\crlf
ifxmlselfempty-else-fi reversed:\space
\ifxmlselfempty{#1}
	content = \xmlflush{#1}
\else
	attribute = \xmlatt{#1}{value}
\fi
\blank
\stopxmlsetups

\startxmlsetups xml:something
\xmlall{#1}{./emptynode}\blank
\xmlall{#1}{./notemptynode}\blank
\stopxmlsetups

\starttext
\ConTeXt\ \contextversion\blank
   \xmlprocessbuffer{main}{test}{}
\stoptext