The question Is it a good idea to take part in a transfer interview if I have no intention of accepting the job? was recently closed for being a duplicate of Should I go to an interview I don't intend to accept the job (if offered)?.
While I think the two questions are certainly similar, the new question is an interview for an internal position while the duplicate question is for a position at a separate company. I think the fact that this is for an internal interview makes the question significantly different and would change the answers begin given. I have nominated this question to be reopened.