Adding a SID after activating the flight plan

When a departure is added after the flight plan has been activated, as might happen when you enter the flight plan without the departure procedure initially, activate it and then add the departure when you get you clearance, the IFD still keeps the leg to the first waypoint after the departure active.

I absolutely agree with Catani. There are many instances when the IFD or any other FMS system does not do what you expect it to. It doesn't matter whose "fault" it is - you just thought that whatever you put in would cause it to act differently than it did. It happens every day and it will continue to do so. It's particulary likely to happen when setting up approaches, arrivals, and departures.

For those with GPS steering, don't forget to turn that off if you are going into heading mode while messing with the flight plan.

This was all learned by me the hard way flying with FMSs over the past 30 years, so don't feel like the Lone Ranger: Don't let yourself get rushed when programming an FMS.  ATC can wait.  Your IFD didn't ignore you; you didn't complete the update by telling the FMS to activate a different route.  It cannot assume that anytime you load an approach or a SID or STAR that you want to activate it and proceed immediately off your current route to any random fix the FMS thinks makes the most sense, unless you are already proceeding to the first fix in the procedure.  An FMS is not smart enough to question your intentions in context as if it were a copilot.  It's not going to warn you, you have to check the route yourself after every entry that you make.  If you don't it's going to take you to places unknown, causing you to put your head down and try to puzzle it out, all the while nobody is paying attention to the aircraft.  Here's a now-famous video if you haven't seen it already that shows how American Airlines realized it had a problem with FMSs that do the unexpected, and what a pilot should do about it.  Good advice for us all.

+1!