We have not find any direct solution, just a workaround, so I'm posting it here, maybe it will help someone.
We changed location of log directories. Primary logs are stored in /db2/TST/log_archive/primary and secondary are stored in /db2/TST/log_archive/secondary. In snapcreator, there is the parent directory as ARCHIVE_LOG_DIR=/db2/TST/log_archive . Snapcreator then recursivly goes through all directories and processes logs as needed.