There was a thread posted on here not too long ago of someone who asked the same thing. The person was told by aacomas that the school of the original course would have to send them a letter stating that their original 4 credit course is equivalent to 3 credit lecture + 1 credit lab. I can't validate this but perhaps you can find the forum and message the op of that thread. try aacomas again or individual do schools. there might be one admission staff member who has seen your case. If u haven't already, do search for other schools nearby with a course structured exactly as your original...just in case you hear bad news.