If you’re having trouble initially syncing 1Password 4 with iCloud, here’s what what worked for me:
- Fire up the previous version of 1Password
- Go to File > Export All > 1Password Interchange File and export
- Open 1Password 4 and delete everything.
- Go to File > Import and import the file you exported from 1P 3
- Wait a minute or two for syncing bliss to occur
I’d say to make a backup first, but 1P seems to do that on its own now. Actually, make a backup first anyway.