I am looking for information on Default data values for the different data types in ArcGIS. We are running a series of Overlay Route Events (Linear Referencing) tool operations. If any of the values from the two input source tables are null then the values in result table are some default data value. For example for Date field types that have null values in the input tables the values that getting populated in the Overlay operation result are '12/30/1899 0:00:00'.
This is happening in a file geodatabase at ArcMap 10.1 and Windows Server 2008.
Does anyone have information on default data values for data types specifically in reference to geoprocessing? Any suggestions to get the null values to stay when the Overlay does it's calc?
Field properties say allow null is yes.
I received word from Esri that this is a known bug in the tool NIM081760. I'd be interested in hearing of any workarounds.