Changing PCS modules and Functional Blocks to SIS modules and Functional Blocks

Dear all,

Currently i am working on the C&E of a project. I don't have a SIS license  (the delivery may take some time) and i am planning to implement it in the PCS control modules to save some effort in the future. Is there an easy way to convert PCS modules and functional blocks  to SIS ones once the licenses are available?  

Thanks a lot.

Regards

Asim