I asked this question before and I thought I understood the responses given but upon reading up on skill awakening and rereading the responses, I am still rather confused.

I understand what it takes to obtain skill awakening but a question I have of it is still unanswered (maybe because I wasn't clear on it) but when one achieves skill awakening, does the awakened skill override the old skill or does it work along side it?

For example, for Bashira her skill is triple shot and her awakened skill is quadra shot beta. Does quadra shot beta overrule triple shot (as in triple shot no longer exists) or can you use both at the same time (as in both skills are available for use)?