When a QWin data file is imported/converted from QDF/QXF to Quicken Mac, the memo field on any scheduled transactions is lost.
This was reported by
@CSlug in this topic:
https://community.quicken.com/discussion/comment/20338840#Comment_20338840I've confirmed this in my file which was converted to QMac a few weeks ago, and noted that while the main memo field is gone - and has to be edited back manually for every transaction - the memo/notes for any split transaction lines is carried over to the Mac. This is the only known data loss I've seen so far in the conversion process.
This happens for both bills and income, so I'll just give two examples - one without a split and one with a split, showing the Windows settings and the result on the Mac after file conversion:

The memo that this is for Britbox is gone after conversion/import to the Mac:

Here's a split utility bill - with a main memo that does not appear on the Mac conversion. But the notes/memos for the split transaction lines do convert:

