There are two ways to upgrade patented technology. One is like diode technology. Most new technologies are improved on the basis of old technologies to improve their performance. In this case, you can apply for a patent for the new technology, but you need to be responsible for the use of the old technology, and you have to pay for the use of the old patented technology within the validity period. One is to simplify the tedious process, steps or structure and get the same or better results. This technology is an old technology that is completely skipped. You can apply for a patent for a new technology without being responsible for the previous old technology.
If these old and new technologies are yours, you don't have to think about what responsibility is. There is no special purpose to keep new technology and give up old technology.