Recently a paper was submitted to ICIMP 2018(will be held at Imperial College London - South Kensington Campus, London, UK during Jan. 12-14, 2018 .). Organizer told that the paper is accepted for publication in JOIG and ' Welcome to participate in ICIMP2018'.
But it is written on the webpage of ICIMP 2018 that-
All the accepted papers of ICIMP 2018 will be included into Conference Proceedings which will be published by IEEE. And they will be archived into IEEE Xplore and be indexed by EI Compendex and Scopus.
If the paper is accepted for the conference then why it will not be published in
Conference Proceedings which will be published by IEEE? Why do they push it to a journal ? Is there a convention like what I stated above? Is it ok/legal to switch like that?
PS: The incident didn't happen to me, I was informed the incident by a forum member, I suspected/suspect, the paper author is lying about the acceptance, it is highly unlikely that such thing can happen.