Argh! I am literally begging for help! I opened 2 Word docs on one monitor; decided to try out the split screen feature to compare the documents. That didn't really work for me, so I dragged one document to my second monitor and completed my task by working with both files maximized. Problem solved.
BUT, big problem now: no matter how many (including only one!) Word docs I open, if I drag any open doc to a second monitor, that file instantly resizes as if it was split screen. Happens in both directions, Monitor 1 to Monitor 2 OR Monitor 2 to Monitor 1. (Closed documents open correctly, maximized.)
I cannot stop this behavior and it is driving me nuts. I have maximized (manually & by clicking upper right icon) and saved the dragged file, but when I drag it to the other monitor, it still resizes. I've tried adjustments with the little tiny bar above the "view ruler" on the right scroll bar and saving. Nothing seems to fix the problem. Thanks so much, Janice (Win 7, MS Word 2010)