I have 25 settlements setup. I have Supply Lines setup like a long chain going from settlement 1 to 2, 2 to 3, 3 to 4, and so on till you get to 24 to 25. Upon Preston giving me the starting mission for settlement #26 I noticed an issue. Even before I cleared settlement 26 and have the ability to create a supply line to send to settlement 26; it already had 3 supply lines setup from three of my other settlements. This shouldn't even be possible because I had just barely picked up the mission to clear it. I decided to see what would happen if I cleared settlement 26 so I could start building there and have the ability to create a supply line. I also wanted to see if the 3 ghost supply lines were actually functioning or just displaying on the map. After clearing settlement 26 I found the 3 ghost supply lines were functioning as I had access to supplies from other settlements(still hadn't setup my own supply line yet). I wanted the 3 ghost supply lines gone so I sat at settlement 26 forwarding time in 1 hr increments for a total of 2 days waiting for provisioners to show up and not a single provisioner showed up for me to retask. I am unable to remove these three auto-generated ghost supply lines the game created. Has anybody ran into this issue before and found a way to resolve it?