Please note that the above procedure does not preserve the privacy of ticket notes; after the import process is complete, all internal notes become public comments, viewable by the user(s).
If you are interested in preserving the privacy of your comments, please feel free to email me at dhoward@ci.eureka.ca.gov and I will give you a quick run down of the changes to the process.
Later on, after my own organization's migration is finalized, I'll be submitting feedback to Mr. Kiwi on how to improve his process, which was invaluable in preparing my own helpdesk for migration.