Exporting a report to Excel can be done without using the List or Export functions. Run the report, click the mouse anywhere near the report title, then press Command-A to select all and Command-C to copy all. If all text is highlighted in gray, you successfully copied the report. Then, open Excel and press Command-V to paste the report. Individual columns should be preserved.
NOTE: This does not necessarily work with all reports in MacPractice.
If the report does not have all the information needed, it can be exported with additional information by creating a list and an export preset.