Author Suzi Berg gives a Q2ID testimonial on data conversion software that can convert Quark to InDesign. Markzware‘s InDesign plugin can convert QuarkXPress (QXP) into Adobe InDesign (INDD) files:

Suzi Berg
Restaurant Rescue Kits
“I just want to say a HUGE THANK YOU for developing the software that converts Quark to ID! I don’t know what I would have done without it! I didn’t use it for a very long time and then you were kind enough to send the update so I could use it on CS4 and it has been INVALUABLE!”