Hi Tom,
for your first question regarding the export from AM 11.0 to earlier, I believe there is no direct way, since the 11.0 uses OCIL and earlier versions use Symantec own XMLQ format. Only way I see it is to figure out the structure of XMLQ format and try to write "converter" to OCIL.
For second question, as there is no out of the box FERPA questionnaire in 10.5 nor in 11.0, I would suggest you build it on your own. For help you can use https://commoncontrolshub.com/, they have it mapped into compliance controls and with starter free account you can use it to help you build your questionnaire. It should not be that hard as there appears to be only 34 controls/questions you need to build.
Bottom line I would suggest - upgrade to latest 11.x.