We'll need to convert the Quicken file before importing to QuickBooks 2019, jsfinn.
After that, let's import the file and convert it a working file using the Conversion Utility in QuickBooks. When finished, you can now start working on your company file.
Ask more questions about QuickBooks and we'll be here to help.
I have converted from a Quicken 2019 to a QB Pro 2019, but the attachments did not come through. Ideas?