AGI and FIA tests come from the same faa question bank. The only difference is the AGI has 12 or so questions that the FIA doesn't have. Theses are the ones that have helicopter and ballon subjects......... The writtens for a CFI are FIA and FOI. If you want a ground instructor certificate for whatever reason like you want a Gold Seal on your CFI certificate (after so many of your students pass their checkride 1st time) you need to take the AGI. That will be 3 tests total and boy are they getting expensive. Hope this helps.
I stand corrected. I dug out the old Gleim's Flt/Grd Instructor study guide and there are no helicopter or ballon questions. It might of been on the IGI, like you said. The AGI questions seem to be mainly on certificate, definitions and a Part 121 question. In any case, there seems to be only a handful of questions on the AGI test that isn't on the flight instructor test.
