Board Thread:Support Requests - Getting Technical/@comment-5296473-20181025003310/@comment-131.243.191.241-20181025010513

To get to the infobox's source (i.e. avoid using Special:InfoboxBuilder), you will need to manually add the necessary query string to the URL ([ like this]). The only time this isn't necessary is when the infobox is "too complicated" for InfoboxBuilder.

If you haven't already, I suggest you read Help:Infoboxes and its subpages. Those should tell you most of what you need to know.