While processing last weekends wedding images i accidently synced the local brush adjustments from one image into 87 other images :-(
Is there anyway to undo this action, or do i need to correct this for each image individually?
It depends on what the previous state was for the other 87 images. If they previously had zero local adjustments, then you can just clear the local adjustments for them and effectively return to their earlier state. On the other hand, if those other 87 images also had their own individual local adjustments, then I'm afraid you'll have to step back (via history) individually.
Europe, Middle East and Africa