Does mindfulness end kamma ? is that a good thing ? Does mindfulness end kamma ? is that a good thing ? 

!!! yes I am aware that the goal is not to attach to anything so avoiding suffering and that good kamma in the end is also "bad"  !!!

I am asking about whats the benifits of mindfulness eradicating kamma becaus :  

Dont we all have a ton of kamma from a gigantic amount of kamma and if we eradicate kammas throw mindfulness it will just be replaced with other kammas which can also be bad kammas ? 

i mean its not like we reach nibana by cleaning up all the kamma "We" got - but by developing wisdom  so whats the good thing about mindfulness ending spesific (not all)  kammas ? 

I ask this after receiving this reply (and wanted this as a follow up different question) : 

"Right mindfulness is an intentional (mental) act therefore it is kamma. However it falls under a 3rd type of kamma that is called the "kamma that ends kamma". "

from here (I wanted this as a follow up in different new question) : 

Is mindfulness itself kamma ? does it create kamma?
What is wholesome is what you perceive positively at the time the result manifests. Since all worldly experiences are unsatisfactory, experiencing Nirvana is wholesome. Anything that reduces your stress and suffering is a good thing.

When you are practice Right Mindfulness, you do not create new Karma then your old Karmas start surfacing which reduce your old stock of karma and newly created karma. Development of the path factors is good Karma. Path factors are also part of the Mental Factors (cetasika).