Embraer 170/190-Waypoints of the active fltplan get deleted automatically.

[haseen]

I made a flight from VGCB to VGEG. Waypoints were CB, ublin, and approach waypoints for rwy 23 ils app. But after takeoff cb, ublin got deleted. After crossing vgeg outbound all app waypoints deleted. I flew basic ils & landed safely. Why the waypoints are deleting?

I use fsx sp2, windows 7 64-bit. My e-jets emb 170/190 is CD version.

[scoobflight]

if my memory is correct the FMC will delete a waypoint if there is no way the aircraft can maneuver to that location (ie, it is too close to the prior the the plane to turn).

 

NOTE: i the above is a best guess ... i have no knowledge of the specific waypoints and routing you are referencing.