Sorry for the reply - did the work around, but I'd like know how to make this work for further analysis.
I used a field with shape length (i.e., line length) - in Field Properties, says it is "Type:Double", and they should be identical. When I pulled them out into an excel file, they were identical. I am working with about 4,000 records. In the file, there are 2 identical records with different names (they are flipped depending on where the start and end locations where - i.e., one starts at one end and the programs runs it again starting at the opposite end) - for each record, the line length is the one feature unique to the pairs. I wanted to basically delete every other record.
Thanks for the help.
Cheers,
Bob