mangosR2/mangos — comment on commit c0446b01a2027e91f4fecd12e8feb8875aacf8ab
File:  line 0
By rsa:

not all, approx 1/2. only if target spell = target linked spell and caster = caster linked.
but some other spells may be moved in this table with other (not _BOOST) link_type. also - from proc methods...