Hello - I just purchased a new Mac & transferred Photoshop via the migration assistant from the old to the new. From what I have read, the next step is to deactivate Photoshop on my old Mac so it is freed up to work on my new. My concern is not having confidence that Photoshop is going to work on my new Mac & by deactivating on my old, I am going to lose my program altogether. Help in moving forward? Will I need my old serial number at any point? If so, where can I find it [I've owned my old Mac + Photoshop for 5 years & am unsure where all the original paperwork is after moving] THANKS.