Making expansion items base game compatible

[Wonderfreak]

Just wondering how to do this? I would only use them in my game, i am not planning on redistributing! I only ask because i like some of the furniture and hairstyles from supernatural but plan on not using that expansion for a while. I have the sims resource workshop but I'm not sure how to export and save

[MrsFlynn]

This may not be able to be done without mods. Since you have the Sims Resource Workshop mod you may need to ask over on their forum to see if it's possible with that program and if so, how.