Hi All - Issue is resolved by adding the following services to NWA.
None of the documents that I have read outline these parameters. They only point out the ESR related parameters.
com.sap.aii.ibdir.core.cts.enableClTransport = true
com.sap.aii.ibdir.core.cts.enableRequestSelection = true
com.sap.aii.ibdir.core.cts.enableTransportWizard = true
After doing this, I was able to connect using NWDS and Integration directory to CTS+.
Enjoy