According to Quicken community forums, it is not possible to convert .qif files (Quicken Interchange format) to .qxf files used on the Mac version of Quicken. However, there seems to be a way how you can tweak existing .qif files which is described in one of the FAQ pages of Quicken community website.
Home > Search converters: qif to qxf
Conversion of qif file format to qxf file format beta
Search for qif to qxf converter or software able to handle these file types.
Convert Quicken Interchange Format to Quicken for Mac data exchange format.
Unfortunately, there is no detailed software record in the database that match this conversion.
Additional links: qif file extension details, qxf file extension details
QIF
Files with qif extension are financial data files saved in the Quicken Interchange Format that is used to transfer accounting and financial data.
QXF
Files with qxf suffix are Quicken exchange data files, which are used to transfer data between Windows and Mac version of Quicken.
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