One of the things I love about my job is the constant challenges I get to overcome. This past week I had a consultation where the customer wanted to transfer Quicken files from a Windows PC to her new MacBook Air.
The process for transferring the files can be a bit complex. In this case, we had to first export the company file we wanted to transfer from the PC and then run it through a converter on the PC. The software to convert is fortunately easily downloadable from Intuit directly and is free. Once the conversion process was complete, we were able to transfer the file to the Mac in a format that the current Mac version of Quicken could read.
This is just one example. Intuit has used a variety of file types over the years, especially once you include their flagship product QuickBooks, so it is recommended to upgrade to current versions sooner rather than later. Had we not had the original computer, in this case it would have been far more difficult to get this data to the new Mac.
See this link for more details about this conversion process