bulk edit underscores to dashes?

I moved a lot of old html pages to wordpress and my problem is all the internal links within in these pages are formatted like “http://domain.com/event/123_456” and in wordpress are now broken since the link structure is different.

Any way to bulk edit the “_” in these links to “-“? There’s over a thousand broken links so doing this one by one isn’t too appealing 🙁

https://ww.wp.xz.cn/plugins/broken-link-checker/