Hi.
find the section in UI , agent resolves backend to UI based on hostname and correlation header mapping for which tier it is received if host name is resolved to agents in corresponding tier than this could be the reason or check if any load blancer that will affect the re-direction of load here
from screenshots it is clear that only /v1 is resolved to user-service and user-service2 tiers that confirms that load to /v2 is not made or not wrong resolved, i guess we do not required agent logs i believe because /v2 does not looks to be invoked , please be sure that backends are associated to BTs discovered if no BT making /v2 call is part of "Business transactiuons" screen that /v2 is not
we mean /v2 is not resolved as per screenshots you provided we see only /v1 backends resolved to user-service and user-service2 , let us know if any disconnect here