Hp 7506 Route-aggregation no counters

[edttmla]

I have
HP Comware Platform Software
Comware Software, Version 5.20.105, Release 6708P07

interface Route-Aggregation61
 
 link-aggregation mode dynamic

i can´t see any counter on the route-aggregation links

di int Route-Aggregation 61
Route-Aggregation61 current state: UP
Line protocol current state: UP
Description:
The Maximum Transmit Unit is 1500
Internet Address is
IP Packet Frame Type: PKTFMT_ETHNT_2,  Hardware Address: 7848-592f-bebe
IPv6 Packet Frame Type: PKTFMT_ETHNT_2,  Hardware Address: 7848-592f-bebe
 Last clearing of counters:  Never
Unknown-speed mode, unknown-duplex mode
Link speed type is autonegotiation, link duplex type is autonegotiation
Flow-control is not enabled
The Maximum Frame Length is 9216
Peak value of input: 0 bytes/sec, at 0000-00-00 00:00:00
Peak value of output: 0 bytes/sec, at 0000-00-00 00:00:00
Last 300 seconds input:  0 packets/sec 0 bytes/sec
Last 300 seconds output:  0 packets/sec 0 bytes/sec
Input (total):  0 packets, 0 bytes
          0 unicasts, 0 broadcasts,  0 multicasts, 0 pauses
Input (normal):  0 packets, - bytes
          0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
Input:  0 input errors, 0 runts, 0 giants, 0 throttles
          0 CRC,  0 frame, - overruns, 0 aborts

it works with

 di int Bridge-Aggregation 11
 Bridge-Aggregation11 current state: UP
 IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 7848-592f-bebf
 Description: xseki27ccac1Trk1
 2Gbps-speed mode, full-duplex mode
 Link speed type is autonegotiation, link duplex type is autonegotiation
 PVID: 1
 Port link-type: trunk
  VLAN passing  : 1(default vlan), 120, 198, 205, 213, 234, 238, 337, 452, 464, 977, 1168, 1245
  VLAN permitted: 1(default vlan), 2-4094
  Trunk port encapsulation: IEEE 802.1q
 Last clearing of counters:  Never
 Last 300 seconds input:  392 packets/sec 66282 bytes/sec    0%
 Last 300 seconds output:  607 packets/sec 649998 bytes/sec    0%
 Input (total):  4762711697 packets, 3479732559042 bytes
         4746785416 unicasts, 6136333 broadcasts, 9789948 multicasts
 Input (normal):  4762711697 packets, - bytes
         4746785416 unicasts, 6136333 broadcasts, 9789948 multicast

Is this a bug  ?