The FMS file is OK and all coordinates are in the same rectangular box when fms file is open on text editor.
But when the fms file is loaded on X-Plane 11.05, duplicated NDB or VOR lead to erroneous leg, one of other duplicates is taken on account instead of the very one which coordinates are OK in fms file.
ND maps then shows outbonding legs to tenth of thousand miles away, resulting on zig zag around the world ...
Seen on differents aircrafts.