Complex sentence: The 14th edition was held as PLMCN14 instead of PLMCN13, then the next issue was held as PLMCN2014 instead of PLMCN15.
Split into simpler sentences: The 14th edition was held as PLMCN14 instead of PLMCN13. Then the next issue was held as PLMCN2014 instead of PLMCN15.