The Adobe InDesign support forum had a great question, which generally has an easy answer. Use InDesign plugin, Markzware Q2ID, data conversion software to convert Quark to InDesign. Read the user’s “quarkxpress 8 to indesign 4” question here:
“I just purchased InDesign to match the software used by my publisher. All my files are presently in QuarkXPress 8. Despite the information in Adobe’s Conversion Guide, I cannot open ANY of my Quark files into InDesign. Even the simplest file with only a few lines of text are grayed out.
Naturally, the answer came shortly thereafter. Use Q2ID the plug-in for Adobe, Markzware’s award-winning, QuarkXPress to Adobe InDesign file conversion plug-in for Adobe InDesign CC! Love the, “Q2ID is the only such product. And I might add that it’s worth every penny” from Bob Levine! See:
When down-saving from a Quark 8 project, to save a QuarkXPress v4.11 doc, some features may be lost, such as transparency. Thus, I would still recommend the straightest route of Markzware Q2ID for data conversion.
Quark to InDesign with Markzware Q2ID for transparency