Board Thread:Support Requests - Getting Technical/@comment-25050081-20161015152058/@comment-1757994-20161016222502

It looks like the interwiki prefix "hc" has been defined only on w:c:casualty, not globally, which is a bit unusual.

The interwiki table isn't hard-coded. It's configurable. But there are thousands of wikis.

Being able to transclude from a wiki requires enabling a feature called scary transclusion. It's remarkably inefficient, because it really screws with caching. I was unaware Wikia had enabled it anywhere but Community. Although it's enabled on w:c:holbycity, it's probably a legacy thing. Don't expect Wikia to enable it anywhere else.