Cannot find OID when using SNMPv3

[cgo.bunane]

We are using snmpv2 before and when I do an snmpwalk(3rd party software) I get a lot of those OIDs. Now we are using snmpv3 and I notice that there are missing OIDs and I tried query it on the switch there is no result.

Thank you in advance I am stuck since our monitoring software uses that OID to monitor the sensor.

[marce1000]

 - snmpv3 may be more sensitive to relevant snmp views being created too as in :
                 snmp-server view view-name oid-tree {included | excluded}
 Bugs could be  a cause too ,use latest advisory software version on the involved devices , 

 M.