Batch Rename - 2nd Hyphen

[anne10solo]

I feel like there's probably an easy answer to this question but I couldn't find one in my search. I need to change the 2nd hyphen in these file names to an underscore. How would I make Bridge skip the first hyphen? I've attached a screenshot.

[SuperMerlin · Accepted solution]

From is:-

(.+-CHE)(-)(.+)

Or:

(.+-.+)(-)(.+)

[anne10solo]

That works! Thanks.

[Stephen Marsh]

I’d usually use capture groups as in SuperMerlin’s examples as I find them more intuitive than lookarounds, however, I pushed myself to find an alternative:

Find: -(?=\d+)

Change: _

[anne10solo]

That works as well! Definitely saved me some time. THanks.