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Converting Translation Memories to Allow Multiple Translations
The only way to convert a translation memory that does not allow multiple translations to a multiple translation-enabled memory is by means of the export and import commands.
To convert a translation memory to a multiple translation-enabled translation memory:
Export the translation memory to a text file.
Create a new translation memory, making sure to select the multiple translations option.
Import the translation memory data from the text file into the new translation memory.
Note: If the current translation memory allows multiple translations, you can use the Always add new TU when target segments differ option (Translation Memory Options dialog box, Tools tab) in conjunction with the Translate and Clean Up functions. When you select this option as well as Update TM in the Clean Up/Translate dialog box, Translator's Workbench automatically adds a new translation unit to the translation memory whenever the target segment in the batch-processed document differs from the target segment in the translation memory (given that the source segments are identical).