The Lazuli females are probably Diana and Papillon. According to the the life histories they were reported missing at the end of December, and reported last seen in February. That matches the description of the 2 females in the group profile.
I just read this off the Friends of the Kalhari Website:
The producers of Meerkat Manor are concerned that the information on the life stories of individual meerkats that featured in their programs is being released before the programmes air, detracting from the impact of the series. For this reason, we shall delay the posting of information on the three groups featured in Meerkat Manor until the latest series has aired, when the previous six months’ information will be posted as usual.
The Friends of the Kalahari Meerkat Project apologize to the regular visitors of this public page for this change in policy, due to recent events.
Too late for a lot of individuals (not FKMP members). The information was seen. The MM producers hope that more (potential) viewers will not see it during the period that season 4 is airing. I guess the element of surprise disappears, not to mention discovering the discrepancy between MM storylines, and facts.