Correct me if I'm wrong, but I believe the min. MP equation for Bowmen is 14*(Level) + 148. Currently trying to wash my Lv. 54 Bowman, who should be able to attain a minimum MP of 14*(54) + 148 = 904. But, as you can see below, I'm unable to down-click my MP to reset into HP. Anyone else having this issue?
This has been discussed to death in the washing guide. You need at least one point in hp or mp to take it out of hp or mp. For bowmen it's easiest to leave one point in hp (omg 1 dex lost!) and reset mp into hp as it doesn't need levelup ap.