Migration Assistant Fails to Transfer 1Password 8

Hi there @wintermute1

Uninstalling 1Password probably won't have also cleared out 1Password's data folder, so you should reset 1Password on your new Mac by following the steps shown here:

☞ How to reset the 1Password app on a specific device - Mac

Then, when you open 1Password again, you'll be asked to sign in to your account and it'll download your data directly from 1Password.com. Let me know how that works out for you. I'll be here if you need further help. :)

— Grey