TGB_1.7.3 Copy Object Bug

I'm working on the Fish Game tutorial at the part where you copy the non player fish that swims around eating all your food. I noticed that when I copy it and paste it to create a new fish that it copys all the information from the original fish (like it's supposed to) except for the script data. More specifically the Class name in the script drop down part of the Edit tab. Everything else gets copied over but that.