Justice Shadower revamp - which skills get turned into which?

If the skill you leveled is deleted, like Ninja Ambush, then you get the amount of SP you used back and you have to use the new skill's mastery book.

However, if you save your mastery books for deleted skills, you can trade them in for any new skill for your class via maple admin.

That doesn't make sense though, previous skill revamps transferred passed masteries from deleted skills to new ones.
Like... an F/P's FD got 'deleted'(moved to 3rd), and Mist Eruption was added. I had FD20 passed on my first F/P, when Ascension went live, I had an Eruption mastery of 20.
Or bowmen/warriors who passed certain skills pre-Ascension in anticipation for their replacements, Achilles and crap got their masteries transferred to the new skills.

It'd be stupid if that didn't happen for Justice, imagine being level 200, all books passed, then BAM, you need to throw more meso away to re-pass books?