Just a thought.
Does the repeater have multiple interfaces?
If you run a tcpdump on the target is it the repeater connecting to target using the IP you expect?
the Repeater only has a single interface.
I have opened a ticket for this with Support now.
In case somebody is seeing the same issue.
This has been identified as Defect QM001872792 related to restricted exports file while using a repeater
and BMC is working on fixing it.
for now just leave the repeater rscd at 8.5..