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.
If worldeddit does not support modded blocks, than I don't think it will work. I did not develop worldeddit so I don't know what it can and can't do.
I suggest using structure blocks instead.