I want to move my collection of photos from my MacBook to my iMac. I went into Finder, copied the iPhoto Library folder onto an external hard drive, and them downloaded the iPhoto Library folder onto my iMac. The folder was 50 MB and I seem to be able to open the photos on the iMac now. Have I copied/imported the actual files by doing it this way? Before I delete anything from my MacBook I want to make certain. Please help!