Photoshop 10 to Photoshop 12 conversion

i have installed photoshop 12 , have converted photos photoshop 10.  however, not 1 of 36, 000 photos photoshop 10 has survived move 12.  happened, can rescued?

what did 'convert' ?

was according file:

http://helpx.adobe.com/elements-organizer/using/creating-editing-catalogs.html#use_convert _a_catalog_of_a_previous_version

More discussions in Photoshop Elements

adobe