@sriracha – InDesign CS6 (or above) will not convert Quark XPress files higher than 4.11.
However there is a special plugin by Markzware you can use:
http://markzware.com/products/q2id/
Before going on, just see the conversion notes of that plugin:
http://markzware.com/downloads/documentation/Q2ID_Conversion_Notes.pdf
Uwe