My MBP's logic board died. Good Hard drive & Time Machine backup. MBP running Mavericks. Have new iMac coming in a few days running Mountain Lion. (yes I'm sure it's Mountain Lion). Can I migrate at start up or do I have to set up & get Mavericks on iMac 1st and use migration later? If anyone has done this or knows the proper steps I could really use the help. Thanks