Is the paid version of SoapUI backward compatible with the open source version?

Hello,

We are trying to consider maybe purchasing the paid version of SoapUI. Currently, I am running an evaluation of the paid version and trying to learn the interface and the extra features. My boss was wondering if the paid version is backward compatible with the open source version, in case we didn't want to continue with the paid version in the future, will we be able to use all the things that were created with the paid one?

Thanks,

Moustafa