So do you mean that it will be an swap, not a fork, and it will be a new blockchain and network errors and vulnerabilities will remain on the old network?
Thanks to the development team for continuing to develop the project

It will be a swap not a fork, because the code is brand new, not shared with any other coin and the blockchain format was also written from scratch and optimized.
There are no known vulnerabilities on the Cryptonite network, of course we can't delete the past when we had the know security troubles but as far as I know, no new exploits have been performed.