Does this come as a surprise to anyone who has used Word extensively???
To this day, I don't know why Microsoft hasn't added WordPerfect's "Reveal Codes" feature to Word to help resolve this... I cringe whenever I have to merge documents from different sources, especially if they're from different versions (e.g. 97-03 .doc + 07-10 .docx), because I never know how badly the result will turn out...
In one example of a 10-page merged document, I deleted a group of bullets and the text moved 1/2 way to the right & the font changed, became bold, and was blue. But it wasn't a simple fix of moving the tab stops, changing the font, etc.--it wouldn't let me do some of those things. That document was so screwed up that I had to cut/paste everything into Notepad and spent 3 hours reformatting it from scratch.
I mean nobody is moving TO WordPerfect from Word, so Corel should want to get some $$$ from Microsoft to license the technology (e.g. due to copyrights, patents)... But then again, Microsoft might be scared to reveal how screwed up the formatting is within .doc and .docx formats, so there might be CYA involved in not doing so...