Moving sites with add-ons

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Some friends and I are currently working on a .net site using concrete5 and if we like things we plan to move it to a .com domain later.
So, the question is if I buy an add-on license and I'm using it on my .net site will I be able to move it to the .com site without any issues?

Will the single license be able to run on both sites? Since both are run by my account?
The forums add-on for example...

Thank you for any help