Ok so here's the breakdown;

I resurrected the hidden Darleen that's only visible in SimPE. I downloaded a clone of her from the Internet and i basically did the steps to resurrecting a Sim with no character Data (i went to the clones char file, extracted the files and placed them in a new folder and deleted unnecessary files and gave the files to Darleen. I also tried to swap the GUID numbers but i failed but hidden Darleen is now a fully playable sim with character data.)

Now that Hidden Darleen Dreamer is a functional Sim, her clone on the other hand has incomplete character data and is unplayable. Do i delete the clone or do i keep it? The tutorial never said anything about what to do to the clone once you've fully resurrected your sim. I am afraid if i delete the clone my Darleen will be corrupted.

Here's the tutorial i saw: https://sims.fandom.com/wiki/Game_g..._character_data

Well, the tutorial does not in fact tell you to delete any character data from the clone, so if you did that, you didn't follow the tutorial correctly. If you did follow the tutorial correctly, you can do whatever you like with the clone - delete it, or play it, or let it molder in the sim bin, it's up to you.