extra features added to sde

I am writing features to a GIS feature class.  The FME workbench says it writes 5170 records but when I open the feature class to review it I have 5182 records.  I have 12 features with "0" area and "0" length.  These 12 records are duplicate records of other features in the feature class.  It appears that this is happening outside of FME.  I just want to know if anyone knows of a fix in FME. I have tried the area calculator and tester combination testing for 0 area but get nothing.  Any help is much appreciated.