Implemented an actual migration from version 4 to version 17.1 Removed "CreateFile" from OpenDatabaseConnection to ensure it does not overwrite the file. Extended tests for MigrationScript Related to Issue [WTI-1060] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@7848 5a3db67b-de53-47b5-99c8-a1c30a6650e2