The previous ECM similar to this one reportedly had two different map types, and this latest one is including several maps. It (the ECM) won't take out all channels unless all maps are used in the ECM and associated with a particular provider ID we can't manually fix ourselves in the box menus. The affected maps will generally include groups of channels that together are of more value to the providers than the normal network ones/local ones, and these pricey channels typically utilize the alternate provider ID that DN/B3V (DN 0106- BEV 0907)introduced last year. So Adult, PPV, international channels... anything they make serious money on, will be protected with the alternate provider ID(s) instead of the regular ones. These alternate IDs won't work with manually entered keys, and they won't autoroll when you need to rotate keys.
The only way the new providers are able to be used are through new BINs that update them. Now, add the fact that many maps are being used, and that adds work to be done and extended times to getting the fix ready and released.
Basically, we have to sit back and be patient on this one. Good news is hopefully the coders will be ready for another one like this in the future from this encounter.