So, I'm trying to make a request that includes, amongst other things, "positions". The problem is that some values, such as the company's name or the job title, are missing in the response. I even tried to do the request with the tools provided somewhere in here in case I was doing something wrong, but the results were still incomplete.

This is the request:
~:(positions)?format=json

And this is the result:

{"positions": { "_total": 16, "values": [ { "company": { "id": 561593, "industry": "Internet", "type": "Privately Held" }, "id": 198079639, "isCurrent": true, "startDate": { "month": 6, "year": 2011 } }, { "company": {"industry": "Computer Software"}, "id": 186068591, "isCurrent": true, "startDate": { "month": 1, "year": 2005 } }, { "company": {"industry": "Music"}, "endDate": { "month": 5, "year": 2011 }, "id": 186066960, "isCurrent": false, "startDate": { "month": 3, "year": 2011 } }, { "company": { "id": 1999839, "industry": "Computer Software", "type": "Public Company" }, "endDate": { "month": 3, "year": 2011 }, "id": 185434758, "isCurrent": false, "startDate": { "month": 2, "year": 2011 } }, { "company": { "id": 167101, "industry": "Online Media", "type": "Privately Held" }, "endDate": { "month": 11, "year": 2010 }, "id": 140102390, "isCurrent": false, "startDate": { "month": 7, "year": 2010 } }, { "company": { "id": 1098174, "industry": "Program Development", "size": "11-50 employees", "type": "Partnership" }, "endDate": { "month": 9, "year": 2010 }, "id": 99776742, "isCurrent": false, "startDate": { "month": 11, "year": 2009 } }, { "company": {"industry": "Program Development"}, "endDate": { "month": 11, "year": 2009 }, "id": 99778377, "isCurrent": false, "startDate": { "month": 10, "year": 2009 } }, { "company": {"industry": "Individual & Family Services"}, "endDate": { "month": 7, "year": 2009 }, "id": 99839635, "isCurrent": false, "startDate": { "month": 5, "year": 2009 } }, { "company": {"industry": "Program Development"}, "endDate": { "month": 1, "year": 2009 }, "id": 99770675, "isCurrent": false, "startDate": { "month": 10, "year": 2005 } }, { "company": {"industry": "Internet"}, "endDate": { "month": 8, "year": 2008 }, "id": 99778759, "isCurrent": false, "startDate": { "month": 7, "year": 2008 } }, { "company": { "id": 255747, "industry": "Internet", "type": "Privately Held" }, "endDate": { "month": 4, "year": 2008 }, "id": 99772259, "isCurrent": false, "startDate": { "month": 9, "year": 2006 } }, { "company": { "id": 81146, "industry": "Marketing and Advertising", "type": "Privately Held" }, "endDate": { "month": 4, "year": 2008 }, "id": 99771677, "isCurrent": false, "startDate": { "month": 6, "year": 2006 } }, { "company": {"industry": "Music"}, "endDate": { "month": 11, "year": 2007 }, "id": 99774314, "isCurrent": false, "startDate": { "month": 10, "year": 2007 } }, { "company": {"industry": "Graphic Design"}, "endDate": { "month": 11, "year": 2006 }, "id": 99772603, "isCurrent": false, "startDate": { "month": 6, "year": 2006 } }, { "company": {"industry": "Aviation & Aerospace"}, "endDate": { "month": 8, "year": 2006 }, "id": 99772951, "isCurrent": false, "startDate": { "month": 7, "year": 2006 } }, { "company": {"industry": "Medical Practice"}, "endDate": { "month": 8, "year": 2006 }, "id": 99839235, "isCurrent": false, "startDate": { "month": 7, "year": 2006 } } ] }}

As you can see, not all the information is returned. I tried it using the REST Console with the exact same results.