Tvheadend

Hi, just wondering if anyone could give me some help with how TVHeadend now stores each service on a multiplex in its filesystem?

Previously, all the services were stored in a folder with the name of the mux UUID. I could add a service manually (some of the things I tune on the 30W satellite have hidden PIDs - Abertis transponders 12671V, 11342H etc.) by creating a new file in the directory with a new unique file name and stream PID information entered manually.

Now, it seems like the mux UUIDs are not folders any more but some kind of archive file which must somehow contain all the mux service information.

Is there any way I can add services manually to this now?

Thanks