You can open or rather import INDD files to QuarkXpress with the help of specialized plugins from Markzware and then save them to QXP format. Not perfect, but atm the only option how to convert INDD to QXP.
Convert Adobe InDesign document to QuarkXpress project file.
We found 4 software records in the database related to .indd to .qxp file format conversion.
Articles and other information relating to indd into qxp conversion:
How to convert Adobe Indesign, QuarkXpress, or Microsoft Publisher documents between each other - Conversion of INDD, PUB and QXP fiormats with Markzware Plugins and Xtensions.
Microsoft Windows software - convert indd to qxp on Windows
A design software used to create rich documents for web or print
Convert from indd file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned indd to qxp. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
QuarkXpress Xtension that adds support for Adobe InDesign formats.
Apple macOS / Mac OS X software - convert indd to qxp on OS X
QuarkXpress for Mac Xtension that adds support for Adobe InDesign formats
Software fro document design and publishing