<Scenario>: I recently got a new MacBook Pro. I'm gonna hand down the old MBP to someone else. I have a Pioneer DDJ-SX. Over time I have purchased several add-ons for Serato, such as Pitch N Time and all the FX expansion packs. Meanwhile, please bear in mind that my Serato license is just tied to using the DDJ-SX. I never bought a separate license. Finally, I must add that I've been using the new laptop for a while, which means I had to active the add-ons there.

<Question>: So, do I have to "deactivate" something in Serato on the old MBP before I do the "nuclear" delete function in OS X that will securely erase everything?

N.B. Actually, I wonder if there's anything else that folks here could recommend doing before doing the "nuclear" erase of the old laptop. In my To-Do list I also have signing off from my iTunes, Apple ID and iCloud accounts, and also deactivating the old laptop from iTunes.

Any help will be greatly appreciated.