301 redirect plugin has added millions of log entries

I have the 404 to 301 redirects plugin (by Joel James). It seems to have created around 4 million logs over the years.

Didn't realize it was doing this until I had an email from my hosting telling me the MySQL database for this plugin is now huge and oversize.

I see there's a Bulk Action in the Logs section that says "Delete All (keep redirects)." Is this a safe option for reducing the database load on my site? Or am I going to alter some functionality in the database or something?

Any help much appreciated.