Tape library to have LTO8 and LTO9 tapes

Dears,

I have a question,

In an organization, we plan to replace an MSL6480 (LTO8 tapes) with a new MSL6480 (LTO9 tapes) and decommission the old one once the new one is configured but the need the data on the old tapes.

My question is what I need to do to make the new library read data from LTO8 and LTO9 Tapes successfully?

Thanks for your support.