In recent years, some scholarly journals have indicated that they accept rewritten or extended version of a conference paper as long as new content are added to the journal article manuscript and that the original conference paper is included in the references. The extended publishing of conference papers now becomes topic worthy of investigation. This study analyzed the extended works of the conference papers from three major conferences in the fields of information management, i.e., Association for Computing Machinery (ACM)'s ACM Conference on Electronic Commerce (ACM EC), ACM Conference on Knowledge Discovery and Data Mining (ACM KDD), and ACM International Conference on Information and Knowledge Management (ACM CIKM). Papers from the 2011 meetings were used as the sample to understand to what extent conference papers have been extended into journal articles and other forms and the lag between conference and journal publishing. It also examined the differences between the conference papers and their extended versions (i.e., journal papers) by comparing the changes in authorship, references, article length, tables, and figures. It reveals the current practices of extending conference papers for journal publishing in the information management fields and may help us understand the contemporary scholarly publishing behavior. [ABSTRACT FROM AUTHOR]