You can edit text files in the Baggage directly. Help+Manual includes an integrated source code editor with basic syntax highlighting for most of the common languages that you are likely to use in your Baggage Files. This makes it possible to perform quick edits on the files without having to export and re-import them.
To edit, select the file in Project Files > Baggage Files > Baggage and it will be automatically opened in the editor on the right. You can open a Search and Replace dialog with CTRL+F.