The --target option can still be used for backwards compatibility but customers should be now directed to use --target-version. The reason for replacing --target with --target-version was introducing the new --target-os option for conversions under RHEL-110563.

It's now being used in the example playbooks in the repo https://github.com/search?q=repo%3Aredhat-cop%2Finfra.leapp%20--target&type=code.