This article will walk you through the process of bulk editing places via a csv file.
Step 1: Navigate to the Places page and click on the Export menu item towards the top of the screen.
Step 2: In the dialog that pops up, click on the Export button to generate a csv file with all of your place data.
Step 3: Open up the csv file and make your necessary edits. Please note that if the place id field does not match an id of an existing place, a new place will be created.
Step 4: Once your edits are complete save your csv
Step 5: Click on the Import menu item in the header and then click on the "Choose File" button to select your newly-created csv
You will then receive an email confirmation when the upload/import is complete and letting you know whether there have been any errors in your import.