The Eclipse IDE is full of magic. Unfortunately, I don't mean that in a good way. Whilst I do like Eclipse when it's all set up and running (right-click problem solving and their 'intellisense' actually works most of the time), setting up and copying projects is consistently a pain.
 Take, for example, special folders in an android project. When creating a new project and adding JNI support through the IDE, certain folders get magic attributes associated with them - right click the JNI folder and it knows that it should display C++ related options and android folders are also identified. However, you try importing or copying an existing project in and you'll find that your magic folders are gone - no, they're just normal folders now. I can't find where this extra information is stored but I'm still looking. Hopefully it's not in a binary format.
  I'd rather eclipse 'just worked'. If I were coding this, I'd write a more forgiving system that inferred metadata from standard names or folder contents (hey, you've got some C++ files in there, have some C++ options buddy!) rather than storing it in some external metadata which also has to be tediously maintained. That is, at least, how I do things in Clayworks.
  Context menus are great; if there's something that somebody conceivably wants to do to a file or folder then bloody well stick that in the context menu. That's what they're for. Programming is, in and of itself, a challenging activity. I've got my own problems to solve: I'd rather not waste too much of my time having to second guess somebody else's work. I would like my IDE to be easier than dicking around with makefiles, not make life harder by being opaque. I've wasted hours, days trying to balance delicate eclipse projects so that they work, for a while. I know it won't last: like a neighbour's car alarm, it'll be calm for a while but it'll be keeping you awake at night again as soon as something changes.


Edit:
There seems to be a file called .cproject that has CDT project information inside. However, copying that over to the other project seems to have no effect. Perhaps there's another file that tells eclipse that it has a .cproject file, rather than just inferring this from the fact the file exists.