Thanks for posting in the Lucidchart Community and I'm sorry for the trouble! Unfortunately, what you are trying to do is not currently supported in Lucidchart; there is no way to unapply conditional formatting rules for specific shapes. However, we're always looking for ways to improve our product and your feedback is the best way to do that. Do you mind adding your idea to our feature request form? Ideas submitted here are passed onto our product development team for future product improvements. I apologize for the inconvenience. Please let me know if you have any additional questions.