That is not the correct method to migrate. We have a command line tool that imports the entire database. After that you just drag and drop (within the tree) to organize.
The top right of the IPAM Settings page has a getting started section having a link to the appropriate steps. Here's the kb version:
Do you think the help link (in IPAM Settings) is prominent enough?
Thanks for your prompt response...that worked!
I would suggest adding this to the yellow "Getting Started with IP Address Management" on the IPAM summary page.