M4300-24XF IGMPv3 igmpsnooping group table empty

i,

I have IGMPv3 configured in my network. M4300 is at the edge with igmpsnooping configured on vlan 120:

#show igmpsnooping 120

VLAN ID........................................ 120
IGMP Snooping Admin Mode....................... Enabled
Fast Leave Mode................................ Disabled
Group Membership Interval (secs)............... 600
Max Response Time (secs)....................... 120
Multicast Router Expiry Time (secs)............ 300
Report Suppression Mode........................ Disabled
Report Flood Mode.............................. Enabled
Exclude Mrouter Interface Mode................. Enabled
IGMP-Plus...................................... Enabled

Querier is external to switch (Cisco 7600):

#show igmpsnooping querier vlan 120

VLAN 120 :   IGMP Snooping querier status
----------------------------------------------
IGMP Snooping Querier VLAN Mode................ Enable
Querier Election Participate Mode.............. Enable
Querier VLAN Address........................... 0.0.0.0
Operational State.............................. Disabled
Last Querier Address........................... 192.168.197.1
Querier MAC Address............................ e0:5f:b9:7c:fb:1a
Operational version............................ 3
Operational Max Resp Time...................... 120

When I join a group from a host attached to vlan 120, I can see it in igmpsnooping ssm table, but not in igmpsnooping group table and mac-address-table multicast:

#show igmpsnooping ssm groups

VLAN                                             Source
ID   Group            Interface Reporter         Filter Mode Source Address List
---- ---------------- --------- ---------------- ----------- -------------------
120  239.101.1.68     lag 1     192.168.197.11   exclude

#show igmpsnooping ssm entries

VLAN                                               Source
ID   Group                  Source Ip              Filter Mode Interfaces
---- ---------------------- ---------------------- ----------- --------------
120  239.101.1.68           *                      include     1/0/11, lag 1

#show igmpsnooping group 120

VLAN ID Subscriber                        MC Group                          Interface Type   Timeout(Sec)
------- --------------------------------- --------------------------------  --------- ------ ------------

#show mac-address-table multicast

                                                                    Fwd
VLAN ID MAC Address       Source  Type    Description     Interface Interface
------- ----------------- ------- ------- --------------- --------- ---------
1       01:00:5E:00:00:12 Rsvd-MC Static  Network Assist
1       91:E0:F0:01:00:00 Rsvd-MC Static  Network Assist
120     01:00:5E:00:00:12 Rsvd-MC Static  Network Assist  Fwd:      Fwd:
                                                          ALL       ALL
120     91:E0:F0:01:00:00 Rsvd-MC Static  Network Assist  Fwd:      Fwd:
                                                          ALL       ALL