Here's a thought.
Let's say your Conditional Format (CF) colors are Red, Yellow and Green.
1. Create a new Dummy column next to your dataset
2. Tag the records that are conditionally formatted Red with an "R" in the Dummy column.
3. Tag the records that are conditionally formatted Yellow with an "Y" in the Dummy column.
4. Tag the records that are conditionally formatted Green with an "G" in the Dummy column.
5. Then create a new conditional formatting on your new dummy column that says turns all R records to Red, Y records to Yellow, and any G records to green.
At this point, you can remove the values you don't want to show, as the Dummy column provides the basis for your conditional formatting.
Cheap, but I think it will work.