My old MacMini became inoperable. My pictures were on an external hard drive. I migrated to a new iMac using Time Machine. I copied my pictures from the externl hard drive to the iMac hard drive. When I launch PSE v12.1 I cannot edit my pictures and need to "Reconnect" the PSE pointers to the new location of the actual pictures. How can I reconnect my catalogues (20 of them) to the actual pictures.