I have many hundreds of post which start with 'Post' and then a hyphen -
Some of these post have some other unimportant text before it, usually post summaries. What comes after the hyphen is the body of the post that I want to retain.
My objective is to have a solution that (ideally) automatically finds 'Post' at the beginning of the posts and then deletes all the text/everything that comes before it, including the word Post WITH the hyphen. So what remains will be the main post.
I have no idea how to approach this (very new to WP development).