It seems a column for location info is being exported in the csv file even without the location addon installed. This causes the exported table to be offset by one column.
I have tried installing the location addon (as well as the service location addon), adding a location, and then creating a new test appointment, but when I export, the location info is not there, and the columns are still offest. (We don't actually need the location info, I thought adding data to that column would fix the issue.)
Here are some images illustrating the issue.
Any insight would be appreciated.