How to clear data in a DNG baseline?

I need to be able to remove sensitive content from a DOORS Next Generation baseline but I cannot identify a method for doing so. We have tried following the "delete from repository" instructions which we succeeding in using to clear the archived data for a live stream artifact, but I am unsure how to find the corresponding baseline data stored in the repository and if I even find it, if it will be removed since delete from repository only deletes the back up content, not the active data - that has to be deleted in the database normally.  Since data in a baseline can't be deleted normally, how do I remove it?

Version 6.0.2+