Does anyone know the rules or where to access the rules for enabling 'purge' on a class? For example, it is not enabled for the 'Purchase Order Line" class:
Bentley informed me that enabling purging is only applicable to custom classes.
Has anyone purged outside of Bentley's purging feature?
Purging from APM tables directly is very difficult. What happens is that foreign keys are not cleaned up when you purge from a table and this causes subtle strange un-fixable behavior later. I have dealt with issues reported by a customer after they had deleted the contents of a table and we could not resolve the bugs after. I'd recommend contacting bentley services for this kind of work.