TXF worked well for me.

Before I input a large amount of data like this TXF file into TurboTax, I like to take a look at it to see if there are any errors in the data.

I was converting TXF file from Quicken into an XLSX file (EXCEL). I was concerned initially because I saw only the headings, but no data.

Then I clicked on the EXCEL icon again to launch EXCEL again, and voila! There it was,data and all.

Swgr guy about TXF Convert