Any ideas how to align the format?

I have a bunch of files like this data / 1002587.rtf, Word looks pretty decent. There are no pictures in them, but there is a text of different fatness, which you need to pull out. Because of this, I thought that it would be good to convert rtf at least text, or another text format. Since there is a problem - different versions of Word generate a different rtf and part of the text disappears or changes. In my source code, when bold text begins, text is replaced by strange characters. If I open the file and re-save it, it becomes even more "interesting". Any ideas how to align the format?

If you're concerned to ensure the text is all the same, simply re-format it or edit the rtf file directly.