You can export the contents of a translation memory to a TMX file, which you can then import to another TM, or an XLSX, which you can edit manually using Excel or any other spreadsheet software.
By default, you can export the translation memory to a TMX file by selecting the TM in the list, pressing the Export button and choosing a location on your computer where the file will be saved.
Alternatively, you can export the translation memory without tags or in a specific compatibility mode. To do this, select a TM in the list, click the down-pointing arrow on the right side of the Export button and select Select export mode.
A window will open where you will be able to select your preferred export options. After you press Export, choose the location on your computer where the file will be saved.