Awesome! And the below seems to be an important detail:
Due to the space savings and performance gains it is again highly recommended that you delete the contents of your Monero working directory and sync from scratch. This directory can be found in ~/.bitmonero on Linux and OS X, and on Windows in \Users\username\AppData\Roaming\bitmonero or \ProgramData\bitmonero.
Deleting the contents means deleting everything including the wallets. I understand to back up but are we to delete everything?
The preceding question was brought to you by the resident computer idiot.