Hi fatalmoon65
it usually means that if something was bugged before the patch, it will also stay bugged afterwards. Doesn't matter if you upload something to the gallery and re-download or if you create a copy of the save. It does not magically fix the error.
So if you take the example of RheaFallout with the clothing above, if you place them in a new save or use save as they will still be bugged. If they use a new Sim on the same save, it won't occur though. So it's all about the Sim that has the issue. Same for the black photos. The save as copy is exactly the same.
If you use my example with the piece of paper, if the text had say a typo on that paper, it will also be there on the copy, but if you re-rewrite the whole text, it will be gone (hopefully unless you make the same mistake again :D)