You can load an external translation memory (TM) by importing a file in two steps.
Once you have created or identified the TM into which you want to import the TM file, you select the TM and click one of two Import buttons to load the external TM.
The actual import takes two steps in either case. In the first step, you specify the TM file you want to import. In the second, you specify the language codes for the import. Separate help topics in the online help describe the import processes.