Kundalini meditation to clear karma is a very odd concept introduced by some. In the field of kundalini awakening no such concept exists. It is the other way around. It is by clearing our karma we awakened kundalini shakti in stages step-by-step,
For full awakening of kundalini shakti karma has to be negated in totality to zero. This is accomplished by establishing total control over five senses and mind. To establish total control over karma, we have to indulge in nishkama karma yoga, offering fruits of karma performed to God Almighty all the time.
On path of kundalini awakening we just could not have desires and wishes galore. We have to cut down on desires and wishes in stages so much so that no desires and wishes remain in the end. This way we finally end up demolishing our ego in totality. To establish control over karma, demolition of ego is an absolute must.
Human beings indulged in karma due to presence of dross impurities within a soul atman. If we could remove dross impurities within our soul atman indulging in nishkama karma yoga, karma negated to zero forever, the pure soul atman need not manifest a human body again. The circle of life for a soul atman finally ends.
Kundalini awakening is necessitated only to reach state of enlightenment. As our kundalini awakened in stages, dormant lying portions of our brain also activated. Initially our brain was active 1 to 2%, the remaining always lying dormant. When we indulged in spirituality, kundalini awakening our brain activated fully 100%. One immediately becomes an enlightened one forever.
Path of karma and kundalini awakening though indirectly related are two different fields of spirituality. Kundalini meditation or whatever we say was never meant for clearance of karma.