HPE Expert
Re: Upgrade from BAC 7.55 to BSM 9.x
You can look at the Upgrade Guide which comes with BSM9.
you will have to go through BAC8.07.
one important note to mention: there were many changes between BAC7 and BAC8, and even more changes in BSM9.
even though you can upgrade and keep all your configuration and data, I am not sure that this is the pass you want to take. HP PS will be able to assist you and recommend the right direction.