[syslog-ng] No remote logging

Hi, I tying to do some remote logging from a Debian10 with syslog-ng 3.19. I have 2 syslog-ng's running, one in the default VRF which receives the logs from the applications, and another syslog-ng in an EXTERNAL VRF which send the logs to log-servers. The default VRF sends the logs to the EXTERNAL VRF via a unix domain. The problem is that sometimes is not streaming anything to remote log servers after configuring it. I have to restart the syslog-ng processes to start the remote logging. Local logging is working fine. Have you come across this issue before? Thanks and Regards, Alex