Thanks very much for investing the time to look into this. This add-on will be extremely helpful to anyone looking at importing tests to Moodle.
I'm attaching a sample export file from Fronter which contains an example of all the current question types available (except the Matching question type which does not export). I have deliberately mentioned the question type used in the body of each question to help identify what is being used.
The question types available to export are:
Single select: Radio buttons, can only select one option from the list.
Drop-down select: Same as above, but the answer options display in a drop-down menu.
Yes/No: Same as above, but the options yes/no are pre-selected.
Multiple select: Almost same as above, except these are check boxes where the student can select one, more or all alternatives and one, more or all can be correct.
Short text answer: The students type in the answers which will be displayed as one line.
Long text answer: Same as above, but the text box will expand, suitable for long answers.
Although some of these may not be compatible with Moodle I've also included various permutations of question settings (such as mandatory, limited characters, text recgonition) and used the additonal field in the question description to indcate what's been used.
I have found this support page on Tests provided by Fronter which may be of use also.
Hope this is useful, let me know if I can help further and thanks again for your effforts.