If a instance of an element that is a member of att.translatable has versionDate=, then all of its siblings of the same GI should also have versionDate=.
See Council discussion "working with translation" of 2013-10-22/30.
Oxford 2013-11 face-to-face: SB to check whether this is implemented, and if not, implement it then close the ticket. Set to GREEN.
Actually, this was implemented 2013-12-30 in r12723, and the re-implemented more severely in r12766 2014-01-10. It's not clear that both checks should stay, but it's also not clear there's any problem to keeping both. In any case, this particular ticket has been addressed.