I am migrating from Win7 on a Desktop system to a Mac Book Pro with 1 tb storage and 16 GB of memory.
Lightroom is importing duplicate photos into the catalogue. It will repeat the import from any specific Finder Folder many times, even though "NEW" is selected in the import function. It shows grayed out photos but then lists them again in a list of photos on the right side of the Import Window. It will do this each time an import is performed from any Finder folder.