Rogue lockpicking skill (skill 633) missing but actually needed

The 4.3.4 client lacks the dbc definitions for skill 633, but skill 633 is still required for the Pick Lock spell (spell 1804) and is even supposed to be modified by spells (i.e. spell 9133). Due to being absent from SkillLine.dbc and SkillLineAbility.dbc, rogues are unable to pick locks at all. I currently have a "hack" in place which looks up skill 797 (Rogue - General) whenever skill 633 is requested by a rogue knowing the Pick Lock spell. Sadly, that prevents any lock picking modifiers from being applied, thus the reason I'm posting this here.

Now, as a possible fix, is there a way to inject the appropriate definition(s) into the core's skill arrays? With the introduction of the 4.x series, skill 633 went from being something to grind (bad idea, if you ask me) to a skill which is automatically set to level * 5 (i.e. same as skill 797, I assume).

TrinityCore rev. 4f2e553f+ 2015-11-11 01:31:53 +0100 (4.3.4 branch) (Unix, Release)
TDB 434.10