I have some portrait pictures with background Moiré effect, that I synced from LR Classic into Cloud CC. Now the Smart Previews in CC have some nasty background artifects, that could only be fixed with importing and uploading the full RAW files from LR CC. The artifects are now gone when I edit, but all thumbnails (Photo Grid, Square Grid and filmstrip still holds the old version). The Detail grid changes after some seconds, but returns to the old ugly version after viewing other pictures.
What to-do ?
The pictures are used in Portfolio, shared albums and so on, so a deletion and re-import is a no-go.
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