Scheduled Transactions

I need to edit one of the scheduled transactions imported from Quicken 2007 into 2017. While I see that I can access a previous entry, if I change that entry, will it stay that way going forward? I don't see a menu item for what I need to do. I could create a new scheduled transaction but don't see how I could delete the current scheduled transaction because I cannot find the actual list of them as it appears in 2007.