You can export the basic attributes of the products to edit them in a bulk file. You can edit them and upload the file back into StoreAutomator.
1- Select the related products and go to Export>Basic.
2- Download the file from Notifications from the top right.
These are the Basic fields which are in the file.
IMPORTANT NOTE: If you want to delete a specific field data, you must leave the cells as empty. This action will delete the data which you have already in SA, when you upload the file back into SA.
3- After the changes, upload the file back into SA.