An interface with 2 sub-interfaces on different VRFs, we are only able to see the IP Address of one of the sub-interfaces.
Spectrum gets the ip address for the interfaces from the ipAddrTable and ipAddressTable.
Release : 10.4.x
Component : Spectrum Core / SpectroSERVER
Using MIB Tools to query these tables and see if the table contains an IP address for the ifIndex associated with the interfaces in question.
If needed, can get an sapwalk or MIB Tools dump to verify.