Editing and Saving Files Inside an Archive
You can open files directly from an archive in the Archive Browser view and then edit them in the main editor pane. To open a file, simply double-click it or select Open from the contextual menu.
When saving the file back to the archive, you are prompted to choose if you want the application to make a backup copy of the archive before saving the new content. If you choose Never ask me again, you will not be asked again to make backup copies. You can re-enable the pop-up message from the Messages preferences page.