Changing captions/subtitles from 25p to 24p for BluRay. Easiest way to do this?

Hi!

I made my subtitles in a 25p project and they're ready to go. But I just learned that we need to make a 24p version to be used with BluRay. Can any of you smart, helpful people suggest the best way to do this?

Note that I stupidly made a lot of corrections in the captions themselves that aren't reflected in the PP generated transcript.

Hope there is a simple way to do this that doesn't involve manually retiming 1000+ individual subtitles!

Cheers,

Lori