Do either of the following:
- Double-click a FDF file to open it directly with Foxit PDF Editor. (Note: Make sure the original PDF document associated with the comments data is not moved, renamed, or deleted after the comments data were exported to the FDF file.)
- Open the PDF document where you want to import comments data. Choose Comment > Import > navigate to where the desired file is, select it (if you want to import multiple comments file, you can select them by holding Ctrl/Shift or by dragging the mouse to select), and press “Open”. You will be prompted that the comments data has been imported successfully.