MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from forums are still considered and checked by the maintainers.
I have reuploaded MCreator 1.7.9 with this bug fixed. Please uninstall your current 1.7.9 and install a new one. Then try to import workspace again. This time, it will import the workspace properly.
Please report back how it went and sorry for the inconvenience caused by this bug which slipped through our testing.