Scrivener file anonymizer?

Hi,
Buried deep in my memory from several years ago, I seem to recall a Scrivener function or something else floating around that allowed you to completely anonymise the contents of a Scrivener project (i.e. replacing the actual contents with junk) so that it could be sent in for tech support without worrying about proprietary data.

Did this exist, or am I dreaming? Was it only for scrambling the NaNoWriMo output file for validation of the 50k words?

If it is exists, I wouldn’t mind knowing about it so I can direct Aeon customers towards it if they have issues with Scrivener syncing.

Regards,
Matt

Recent anonymising advice from KB:

https://forum.literatureandlatte.com/t/large-documents-fail-under-os-x-10-10-yosemite/27171/6