when you want to export metaobj, matrix, portfolios, the urlst include à & char.
and the export fails.
I have seen that in https://source.sakaiproject.org/svn/portal/branches/portal-2.9.x/portal-util/util/src/java/org/sakaiproject/portal/util/URLUtils.java
the & char is present line 85 in
public static String BAD_PATH_URL_CHARS = "\"'<>&";
when you remove the & char in the line 85 like :
public static String BAD_PATH_URL_CHARS = "\"'<>";
export becomes possible.
can you apply a patch for 2.9x version ? please