They are projects created via "Open other Workspace, Android Project".
I did that for each of the three projects - creating 3 slick workspaces.
Then from one of those workspaces I added the other two projects - so that I have a single workspace with 3 imported Android projects.
Another test:
Find all ".", Regular expression (UNIX), List filenames only, "<Workspace>", "*.apk;*.cfg;*.dex;*.java;*.png;*.prop;*.properties;*.xml", Exclude: "*.ex;*.dll;*.lib;*.pyc;*.exe;R.java;*.class;"
ListFileNames only.
This should give me a complete list of files searched.
Comparing this to search by path I see an apparently random selection of excluded files.
The projects are using wildcards.
How can I send you files privately?