You can export any subset of your CATALOG to a CSV spreadsheet, which can be opened by Excel, Numbers or any other spreadsheet program.
Select the track(s) you want to have appear on the spreadsheet. Click in the checkbox(es) to select your track(s).
Click on Export to CSV.
TrackStage will process the request and then display an alert when the file is ready to download.
Click on the HERE link in the alert message.
The CSV file will download to your computer. It may appear at the bottom of your screen or you can find it in your Downloads folder.
Open the spreadsheet and edit as desired. The spreadsheet will show ALL possible fields and the data contained within them, including those that are not showing in your CATALOG columns.