That's usually the case (Licencing FAQ) but if you want to check individual circumstances please email sales@gpsoft.com.au with details of the situation and they can give a definitive answer. (e.g. Is the licence one you bought or one the company you work for bought. Are you using a work computer or your own.)
This is why we allow evaluation first, and switching between Pro and Light to test for differences, to see which version makes the most sense for your needs.
If you decide you wish to upgrade from Light to Pro, you can do so for just the difference in price here.