The below gif (courtesy of Chalak) is precisely what I'm trying to do on Stoic, my level 16 archer. Spoiler I go through the entirety of the above process, and all seems to work until the "Confirm these changes" window pops up. When I click "Okay", the window closes and nothing is changed, and the ap reset is not consumed. What's really strange is that the hp in my stats window and my reset window do not match up: Spoiler The former is 530 and the latter is 519.
That certainly clears the latter part up. On the other hand could you please consult the image below? ^After I click okay, nothing changes. Is that normal?
MP washing across all v62 servers (I can't think of an exception) have a fixed formula for classes. That means that the minimum MP (calculated on the server-side) required to wash out MP into another stat is based on your base job (in this case, Bowman) rather than your current job (in this case, Archer). Bowmen on most v62 servers require at least (14 * Level + 148) to wash. In your case, it appears that you need at least 372 MP to wash, despite the client letting you wash at this early level. The client allows you to wash because the server-side formula is incorrect (the server should technically let you wash because the client allows you to) but no v62 server has put the effort into syncing the minimum MP formulas across 1st and 2nd level jobs. You'll notice the (14 * Level + 148) formula kicking in once you become a Bowmaster / Marksman.