LR4.3 does not show previously imported CR2 files taken using 5D mark III by trial version.
When tried to synchronize the files not show when browsing, the import window comes up. All the Jpeg files, Raw files are seen in the window. None of them are highlighted nor selectable. LR is assuming that those files are already imported but if imported they are being shown for browsing or editing
North America
Europe, Middle East and Africa
Asia Pacific