Replication problems with a mixed environment R5 and R6

Hi,We have a mixed environment with some R5 server and some R6. We have also an application replicated on all the server and an HUB server to control the replicas.

The hub server is 6.5.1

When this server replicate with another R5 (5.0.6a) server, in the replication log we found message like “entry already in index” and the replica fails.

I try to replicate manually and I notice that If I use an R6 client I receive the same error, if I use an R5 client the replica was perfect.

It depends from the version of the server ?

I need to upgrade as soon as possible ?

What can I check ?

I tried also to compact, fixup and recreate the replica without any solution.

Bye

Acolaja