One reason someone would search for 0100DCA0064A6800--v327680--US is save file manipulation. On a non-hacked Switch, save data is stored internally and cannot be directly copied to an SD card. However:
The v327680 tag may point to a partial or corrupted update. Luigi-s Mansion 3 -0100DCA0064A6800--v327680--US...
: The third installment in the main series, set in the Last Resort hotel rather than a traditional mansion. Luigi-s Mansion 3 -0100DCA0064A6800--v327680--US...