Board Thread:General Discussion/@comment-2106279-20170305083611/@comment-1038387-20170305210829

Saftzie wrote: Most wikis at Wikia are licensed CC-BY-SA. It's not possible to "steal" content, because the SA part of CC-BY-SA grants everyone the license to copy (virtually) everything. (Images are a little different.) The only requirement for copying is that the original source needs to be attributed (BY).

The key difference here is whether that person copied the content, or imported it. If they imported it with full edit histories, the license is followed. Just copying (or importing) the most recent version is a different story.