@kthomas1059
i haven't had that experience. maybe xteve data got corrupt. you could try to delete xteve folder and start over with the latest xteve. i know its not fun. but i never had the duplicate issue. but i dont like if you update the m3u going to xteve, by changing the order. it dont update the order, unless you delete the playlist and re add to xteve. but the same thing happens in channdvr when i try to change the order of channels. i can change the order in xteve and channdvr by changing the channel numbers, but that is tedious vs drag and move order.
i use m3u4u to edit my channels / order / add / delete. then send to xteve then to channdvr.
or mayby upload your m3u file to m3u4u site. edit the channels and download. then point xteve to that downloaded m3u file.