FYI - If anyone else runs into this situation, I have discovered an even better solution. There is a WordPress plugin called Export to Text which allows you to pick and choose what to export as a text file. Editing in Excel will let you clean up any unwanted markup, reorder resources before import and generally modify anything you wish. I find it much easier than messing with the sql file. Save as CSV when done and use the ImportX component for csv import into Modx. Whatever works best for you, right?