Version history functionality in Writer

I added some content to a Writer file last night, and later realized it was the wrong document. I now want to know if somehow can see which lines I added to the document. Is there a way to do something like this? I do not want to delete the content; I just want to know if there is a way to identify it and then cut and past it to the right document.

Unfortunately, if you added your lines without setting beforehand EditChangesRecord, LO is unable to report which runs of characters were entered since last change “approval”.