Migrate from Heavy forwarder to Universal forwarder

[MKroki]

Hi guys,
OS is Linux RH 32 bit
I had HF version 5.0.5, now I installed UF 6.4.3. i386. Done migration with old_splunk.seed, and check point is recognized (cannot check yet, only saw on server). Done deploying apps by deployment server.

After that I copy inputs.conf (change hostname), deploymentclient.conf from other UF.

In splunkd.log have this messages:

INFO DC:DeploymentClient - channel=tenantService/handshake Will retry sending handshake message to DS; err=not_connected
ERROR TcpOutputFd - Read error. Connection reset by peer
ERROR TcpOutputFd - Read error. Connection reset by peer

Old HF is stopped, but not deleted.

Another thing that bothers me, I checked server.conf, it is the same as on other UFs, only thing is different is pass4SymmKey in General stanza is creating after restarting UF. How to stop creating pass4SymmKey in local.conf. On other UFs don't have pass4SymmKey in local.conf in General stanza.

I'd appreciate any kind of help.

[MKroki]

Do I have to clean something on deployment server, indexers? Does something stayed from old Heavy forwarder?

[MKroki]

Sorry, forgot to mention. Splunk environment is 6.4.3. Except deployment server (6.2.6), but I think this doesn't matter.