As Oxford WordSmith Tools develops, it has become necessary to store more data along with any given word-list, concordance etc. For example, data about which language(s) were selected for a concordance, notes now stored with every type of results file, etc. Therefore it has been necessary to supply a tool to convert data from the formats used in WS 1.0 to 3.0 to the new format for the current version.
This is the Data Converting tool.
If you try to open a file made with a previous version you should be offered a chance to convert it first.