What changes when you click ‘I moved it’

The “uuid.location” value is changed.  The “uuid.bios” and the MAC address for the network adapter remain unchanged.

What changes when you click ‘I copied it’

The “uuid.location” and the “uuid.bios” are changed. The MAC address for the network adapter is changed.

Choose “I copied it” and it will always avoid hardware conflicts, however, this may create licensing conflicts within the VM.  Some software uses mac address to license.

Choose “I moved it” it avoids software licensing conflicts within the VM, but this may create hardware conflicts.  A duplicate MAC address might exists in the same network.