SKIPTRANS is used to tell Extract to skip a long running transaction or a empty transaction that hasn't committed. It was used prior to Bounded Recovery being implemented when OGG would require old archive logs in order to restart.
To skip a DDL operation, you can use this parameter..
DDLERROR RESTARTSKIP 1
This will tell Extract to skip the next DDL operation it encounters. I haven't used it with DDL INCLUDE OBJNAME abc.* EVENTACTIONS (DISCARD, ABORT).
I'm not sure of the order of operations on this, but a short test would show if it would work.