http://www.virtuosityonline.org/portal/modules/news/article.php?storyid=733
 
I thought this a very interesting article as to how heretical bishops were handled in the early church. Anyone baptized by a heretical bishop had to be rebaptized and no one could take communion from a heretical bishop which is the reason why no conservative orthodox Episcopalians should receive communion from a liberal revisionist Episcopalian bishop nor to be baptized by him. Also according to this article an orthodox bishop had to officiate in a diocese where a heretical bishop had his diocese although an orthodox bishop didn't normally officiate in another orthodox bishop's diocese unless invited.