Oracle GoldenGate option to extract forced null values?

I was looking through the GoldenGate documentation and maybe I missed it, but I was curious if there was an option to have the extract process grab forced null values from an INSERT op.  We have a scenario where they are forcing null values and works just fine in the source side, but the columns are configured with default values.  I looked at the red log entry and it shows the null values being inserted, but when i looked at the source trail file it leaves off those columns.  It looks like since the columns that were inserted with forced