If you have any custom settings and/or dictionaries that you plan to reuse, you need to back up them before uninstalling, migrating, and upgrading.
For example:
If you have already changed any values of the theAppServer parametersin AppServerX.xml configuration file, you may need to transfer these settings to a new server. Otherwise, these parameters values can become incompatible.
Back up the CustomDictionariesfolder (<WebSpellChecker_Installation_Path>/AppServer/CustomDictionaries) with global customdictionaries and its CustDictConfigglobal custom dictionaries and its CustDictConfig.xml configuration file.
Back up the UserDictionaries folder (<WebSpellChecker_Installation_Path>/AppServer/UserDictionaries) with all personal user dictionaries created by end users.