Like others have said here that various Kahma teaching are still practiced. Also in the Kahma are the 17 Dzogchen tantras, etc, etc, which are foundation texts and transmissions.
I was fortunate to attend the Kama transmissions at Shechen in 2004 given by Kyabje Trulshik Rinpoche. Kyabje Trulshik Rinpoche instructed Taklung Pema Wangyal Rinpoche to give some explanation of the transmission to westerners each evening. I do not have vast knowledge, even accurate knowledge, but some of the sadhanas seemed very unique to anything I have every received, and actually many of the transmissions and sadhanas were given at that time by Guru Rinpoche to vidhyadharas only... it says in the actual initiation instructions that you have to be on the vidhyadhara level to just receive a number of these transmissions within the Kama. So a smuck like me is maybe just getting some blessing. Now, rightly or wrongly, I was left with the distinct impression that quite a lot of these practices were related to the specifics of that time when Guru Rinpoche was transmitting the Dharma in Tibet and these practices were required to empower the main practitioners in planting the Dharma firmly in Tibet, and accordingly they arose from Guru Rinpoche's wisdom mind.
Just my impression... not a qualified, informative commentary. Hope this helps and does not add further confusion. You should ask your teacher to clarify all this.