I will explain why its get cut , its because the number total character teks in ndmap .
Road of Gratitude = 18 Total Character teks number . If you edit in hex its will be hard .
Its better use the strs for edit NdMap. the hex editor just for copy paste some new line only in ndmap .
For more detail see at my picture bellow . for the strs you need make your own ndmap strs , because its wont match if use other ndmap strs that dont fit with your ndmap file.