It is quite possible that Quicken can export/convert data from the Mac version (*.qxf) to those used on Windows platform (*.qdf). Should be not a problem in latest Quicken.
Convert Quicken Essentials for Mac financial data exchange file to Quicken financial data.
We have found 2 software records in our database eligible for .qxf to .qdf file format conversion.
Microsoft Windows software - convert qxf to qdf on Windows
A personal finance management program by Intuit
Convert from qxf 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 qxf to qdf. 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.
Apple macOS / Mac OS X software - convert qxf to qdf on OS X
Mac version of popular Quicken personal finance management software