Abaqus - Open student version models with commercial package

Hello Everyone, 

I have created several Abaqus models in the student version but when I try to open the .cae files with the commercial/academic license, they cannot be opened. 

Is there anyone else that has experienced this before? 

And, is there any way of getting around this? 

Thanks in Advance.

Amrita

Abaqus ​​​​​​​