Each log file name includes the instance name and timestamp:
<workflow name>.<workflow instance name>.<timestamp>
<session name>.<workflow instance name>.<timestamp>
For example if the workflow log file name is wf_store_sales.log, and the instance name is store1_workflow, the Integration Service creates the following log file names for the binary workflow log file and the text workflow log file if workflow runs on July 12, 2022 at 11:20:45:
To avoid overwriting the log files, you can archive the log files or save the log files by time stamp.