When using the Edit in SSA command for a pipe network, none of the Catchments associated with pipe network structures are being brought into SSA as sub-basins. Tried this in two different drawings today with small and larger pipe networks.
Ernst Engineering Fred Ernst, PE C3D 2013 SP2, C3D 2014 Hot Fix 1 W7x64; i7 8gb; Radeon HD 5700 www.ernstengineering.com
Using your drawing in AutoCAD Civil 3D 2013 HF2.1, I did not face any issue using the EditInSSA to export the whole network along with the catchment. Please refer to the video: http://screencast.com/t/QXFByDKBq
If the issue occurs with every network, please uninstall and reinstall only SSA 2013 using the Civil 3D 2013 setup.exe.
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