As of December 30, 2008, all MultiNavis are henceforth disbanded.
With shelving and the improved SP system, MultiNavi is highly redundant, and we've decided to axe the system. This only affects a handful of players, but still needs to be done.
If you currently have a MultiNavi/Voucher/are on a Navi Mission:
Then you may choose to receive either a free SP, or if you'd prefer/already have an SP, 5000 Zenny. In addition, if you have spent money on any upgrades for a second Navi, then you are automatically refunded that amount.