I ran the zcm_purgehistory(1000, 1) command on my ZCM DB server to clear out all the old inventory history and other stuff. Why after doing this did the database increase by 2 GBs? I would think after running this the database would decrease not increase, and to increase by 2 GB on top of that.

ZCM 11.2.2 on Windows Server 2008 with the Embedded Sybase Database.