I made this same move a few months ago. FBI blue to CIA green. My last BI was completed in January 2014 and my last CI poly was in December 2013. My FSP was 2008. I was worried those dates would hold me back. It didn’t.
One thing the FBI does that is a pain is not record the FSPs in anything besides internal systems. Mine was not reported in Scattered, but I called the polygraph unit and they told me that the receiving agency could request the poly records via fax. Miraculously after that call, my FSP appeared in Scattered.
My guess is the FSP record is what’s holding you back, regardless of their “unadjudicated info” excuse. Have an FBI security officer look you up in Scattered and see if your FSP is in there. If not, call the polygraph unit and talk to them. Be kind and just talk through the issue with them. The lady I spoke to was great and very nice and helpful. She obviously is not a polygrapher. lol.