There's not enough information in your post to fully evaluate. When you say you 'decided to edit it', did you edit it by changing the scheme settings? Or by clicking the edit button in the 3d window and manually moving elements?
As a general rule you should avoid manual editing wherever possible. Any time you make even the slightest adjustment to a frame or panel element it is gets broken from the scheme and must now be only edited manually.
When all else fails sometimes it's best just to use the eye-dropper to absorb the settings of the existing curtain wall and then create a new one using those same settings to replace it with.
Archicad 24 USA (full), Macbook Pro (16-inch 2019)