logging rule does not recreate file on disk after deletion.

Hi there.

i have changed critical rule(under logging) from echo to disk.

I see that it has created file called log.0.txt

When i delete the file then it does not create a new file.

The reason for changing th rule from echo to disk is to save all failed login attemps such as brute force to file for future refrence.

I did not try to reboot router after deleting file. But it does seems to recreate the file when i re-enable the rule.

Is there a way to make the file blank without deleting it?