Please need help with a package not loading data

Hi,

I have a package that runs every month and the source is a flat file from the mainframes. My Package looks at a particular location and if there is a new file it loads it. In the flat file there is a column "DeptID". Till last month there were 48 departments and recently they added a new department, the 49th. The department id is DKD453 and i can see it in the incoming flat file but it doesnt show in the destination table, the rest of the data gets loaded as well without any error messages, can some one please point me what might be going wrong?

Thanks

SV