Which version of iX developer are you using? Some versions when you go to the dialog box to setup the save location is it a little different.
You select the same action you would to save the database to a USB drive, but you select the 'project files' radial button.
When you have a 'Database Export' action, press on the button with three dots on it. You can have multiple 'Database Export' actions saving the database files to different locations when a button is clicked.
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Then select where you want the file to be saved. In your case, it should be saved to the 'Project Files Folder'.
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Then you need to turn on the FTP server on the Panel. On the 'Systems' tab click on the FTP icon circled in red. That brings up a dialog box where you can turn the ftp server on.
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You can then FTP to the Panel and browse a directory where your data backs are.
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