In “Find in Files” you can Search Multiple Files and Output the Results for All Search files to 1 Document.
In “Replace in Files” you can Search Multiple Files and Change Text in the Current Files.
It would be good to have a Extract Function in “Replace in Files” so that you could use Regular Expression Back References to Search Multiple Files and Output the Results for All Search files to 1 Document.
You can do this at the moment through “Find in Files”, and then using “Replace” from Results for All Search files to 1 Document – however it is a 2 step process.