OBA does not work with SiS 11.4x without a workaround. The workaround is :
Workaround for 11.4x
1. After creating the SiteScope collection within OBA, open the SiteScope UI.
2. Navigate to the integration preference.
3. Select the integration “opsa_opsa_default and click the “Edit” pencil icon.
4. Do not change anything. Simply click the OK button.
5. SiteScope data should now be sent to OBA.