Does it improve if you turn on "Repeat Background" under Map -> Layers.
thanks for responding, no the issue still remains when I turn off "Repeat backgrounds"
You can see on the map line 23 (Los Angeles) goes left off the screen and reappears on the right in Australia.
Any further ideas on how I can stop this?
Could you please provide some sample mock data in packaged workbook? It'll help us to dig your issue.
I thought I sent you a packaged workbook but can't see it attached.
None the less I think I've sorted this. I manually plotted the lines at 50km intervals.
This forced the lines to display as I wanted them