Hello,
We can confirm that this is a TDS GTNXi Pro bug, thank you for pointing it out, as well as thank you @NAVData for the clear information, it has helped us track down the bug and fix it. The two M348 airways for MEDKO in the TDS GTNXi Pro is a bug and this has been fixed.
The fix will be part of the next TDS GTNXi Pro version release: V1.1.0.1
Best regards,
Tiberiu
TDS Sim Software