mechanisms and use them in conjunction with the two previous methods. But be
careful not to store too big variables because it cost time, whatever logging
level is chosen.
+
+Switching from a version of ADAO to a newer one
+-----------------------------------------------
+
+The ADAO module and cases are identified as versions, with "Major", "Minor" and
+"Revision" characteristics. A particular version is numbered as
+"Major.Minor.Revision".
+
+Each version of the ADAO module can read ADAO case files of the previous minor
+version. In general, it can also read ADAO case files of all the previous minor
+versions for one major branch. In general also, an ADAO case file for one
+version can not be read by a previous minor or major version.
+
+Switching from 6.6 to 7.2
++++++++++++++++++++++++++
+
+There is no known incompatibility for the ADAO case file. The upgrade procedure
+is to read the old ADAO case file with the new SALOME/ADAO module, and save it
+with a new name.
+
+There is one incompatibility introduced for the post-processing or observer
+script files. The old syntax to call a result object, such as the "*Analysis*"
+one in a script provided through the "*UserPostAnalysis*" keyword), was for
+example::
+
+ Analysis = ADD.get("Analysis").valueserie(-1)
+ Analysis = ADD.get("Analysis").valueserie()
+
+The new syntax is entirely similar to the classical one of a list/tuple object::
+
+ Analysis = ADD.get("Analysis")[-1]
+ Analysis = ADD.get("Analysis")[:]
+
+The post-processing scripts has to be modified.
+
+Switching from 6.5 to 6.6
++++++++++++++++++++++++++
+
+There is no known incompatibility for the ADAO case file or the accompanying
+scripts. The upgrade procedure is to read the old ADAO case file with the new
+SALOME/ADAO module, and save it with a new name.
+
+Switching from 6.4 to 6.5
++++++++++++++++++++++++++
+
+There is no known incompatibility for the ADAO case file or the accompanying
+scripts. The upgrade procedure is to read the old ADAO case file with the new
+SALOME/ADAO module, and save it with a new name.
+
+Switching from 6.3 to 6.4
++++++++++++++++++++++++++
+
+There is no known incompatibility for the ADAO case file or the accompanying
+scripts. The upgrade procedure is to read the old ADAO case file with the new
+SALOME/ADAO module, and save it with a new name.
