Created attachment 101961 [details]
step by step description of actions where search criteria was erased

Application: kexi (2.9.7)
KDE Platform Version: 4.14.16
Qt Version: 4.8.7
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
<When a new field is added to a query, any criteria after the second AND is erased (even if the query was previously saved.>

Initial query criteria:
SELECT nometudiant, prenometudiant, fkmateria, FROM tbl_curso, tblcursoanomater, tblestudante WHERE tbl_curso.refgroupe = tblcursoanomater.fkcurso AND tbl_curso.refgroupe = tblestudante.fkgroupe AND (((tblcursoanomater.fkanocurso)=1))

One field, "libellegroupe", was added [using design screen], and then the last criteria is erased.

SELECT nometudiant, prenometudiant, fkmateria, libellegroupe, FROM tbl_curso, tblcursoanomater, tblestudante WHERE tbl_curso.refgroupe = tblcursoanomater.fkcurso AND tbl_curso.refgroupe = tblestudante.fkgroupe

see attachement for the rest of the description.