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They would be in the Sims3Pack.
Recompressorize and unpack, if you have not install them. If you have, just run the files in DCBackup over s3rc to "unlock". Of course I had installed in a vanilla user folders so those are all files for Sunlit Tides.
The SunlitTides*.Sims3Pack would open just fine in CUSTARD, so I got a CUSTARD window open to get the filenames and then look for the files in DCBackup to open in s3pe.