So, found something that just doesn't work at all (but is semi-handled in NCP version).

When packages released by Micro Focus contain policies and objects that are prefixed with a space (of which there are far too many), the behaviour between the Designers is different.

NCP Designer:
Will import and deploy, but always shows differences on a compare.

LDAP Designer:
Will NOT import object from eDirectory! Revert Package Customization doesn't fix it either.
Click image for larger version. 

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Really, Micro Focus need to go through every published package and check for space prefixed objects and get them updated. It shouldn't be the customer having to report each and every one individually.