Thanks @rickh. The excerpt from the 19 April announcement to...

Thanks @rickh. 

The excerpt from the 19 April announcement to which you're referring reads:

The processing of the data will commence shortly, and is anticipated to take approximately two months.Following data processing, interpretation of the newly acquired data and integration into existing data canthen proceed. We look forward to providing further updates on these activities as they progress.

We did provide further updates on those activities as they progressed, including, but not limited to, mention on 27 August in relation to the environmental performance report that:

The data acquired during the survey is nearing completion of processing by an Australian seismicprocessing company. Upon receipt of the processed data, Advent Energy will integrate the new datainto its existing dataset.

So the processing of the data has been completed, as advised on 31 October 2018: 

The Company is pleased to report that the data obtained during the recent 2D seismic survey,undertaken in PEP11 earlier in 2018, has been processed. It is presently being integrated withexisting data for interpretation.

We'll continue to provide further updates on this activity as it progresses.