Tvheadend

Some weeks ago I pulled out of the drawer a TivuSat card (Nagra 183D) that I used more than one year ago. This kind of card doesn't expire but need a periodic refreshment of the rights.

I'm not able to make it work again using tvheadend + oscam (capmt net interface) sending it EMMs. I'm not sure if my oscam/tvheadend configurations are correct but I can't see any kind of EMM-related activities in tvheadend logs. Could you help in understanding if tvheadend is correctly forwarding the EMMs for my cards to oscam? It would be useful to indicate in what kind of log/trace of tvheadend or oscam I should be supposed to see an EMM-related activities of the two programs.

Is it a bug of tvheadend? I can't say yes but I can't say no...

tvheadend version: 4.1-2074~gafae049
tvheadend capmt configuration:

{
        "mode": 5,
        "camdfilename": "sauron",
        "port": 9000,
        "class": "caclient_capmt",
        "index": 1,
        "enabled": true,
        "name": "oscam" 
}

oscam version: 1.20-unstable_svn build r11194
oscam.conf:

[global]
logfile                       = syslog
clienttimeout                 = 15000
clientmaxidle                 = 1200
nice                          = -2
maxlogsize                    = 0
waitforcards                  = 0
lb_mode                       = 10
lb_nbest_readers              = 2

[dvbapi]
enabled                       = 1
au                            = 1
pmt_mode                      = 4
listen_port                   = 9000
user                          = mario
read_sdt                      = 1
write_sdt_prov                = 1
boxtype                       = pc

oscam.user:

[account]
user                          = mario
pwd                           = ******
caid                          = 183D
monlevel                      = 4
au                            = tivusat # it was '1' but it didn't change anything
group                         = 2
ident                         = 183D:000000

oscam.server:

[reader]
label                         = tivusat
description                   = TivSat smart-card
protocol                      = pcsc
device                        = 0:
caid                          = 183D
rsakey                        = **********
detect                        = cd
nagra_read                    = 1
ident                         = 183D:000000,005411
group                         = 2
emmcache                      = 1,3,15,0
auprovid                      = 005411 # added only on my latest tests