SP reset for big bang

Well, the problem itself with JMS is.
Some skills vanished from the book itself, some had their max level changed, for example, who had magic guard at 20 now has it at 15. It makes SP disapear, and the SP reset formula is supposed to give you the SP you have applied on skills, when you used to have more SP than it's given to yourself.
This is proved because every job gets different amount of SP at the same level. I got 334 back at 126, while my Captain got 354 at 126.
.
They must change the formula for a fix. It's actually an easy change, even someone unexperienced with such things can think on it by pure basic math.
Something like this it should be.
.
If character is on 1st job: [(Level - 10) * 3] +1
If character is on 2nd job: [(Level - 10) * 3] +2
If character is on 3rd job: [(Level - 10) * 3] +3
If character is on 4th job: [(Level - 10) * 3] +6
.
If the character is a magician, also, the limit for applying points into skills from other job advancements (The "You need to apply more points into Xjob skills") should be 6 points higher and equal to other jobs, since KMS changed the starting level of a mage to 10 and not 8 anymore.

Based on this, I guess for Shikage there were 10 points freed up from skills with lowered maximum levels, and then when he used the reset scroll, it erased and replaced those 10 with all the remaining 449 skill points, instead of adding to them.
If that is what is happening, then to avoid this problem, one should make sure that there are no free points before using the reset scroll.

Edit: Also possible that the scroll worked as intended, but the freed-up skill points were never there to start with.

About your last part; does this mean mages will have 6 fewer skill points after big bang update?