Migrating question

Hi. I have a new iMac and want to copy everything from my old MBP to it. It seems i can do this using the Migrate facility in Utilities. Hopefully this will clone an exact replica of everything from my old to new computer. Is this correct? My other question is this. How does this work with licences. I already have PhotoShop and LightRoom running on two computers as my licenses allow. What will haven when I migrate to my new iMac? I will then have three copies. Will I have to then de-register the ones on my old Mac and then register the copies on my new iMac, that's my guess, am I right?

Jules