We installed ArcGIS Maps for Office last summer and had an issue with just normally copy and pasting from one cell to another. When copy and pasting it will give you a ')' in the cell. I uninstalled ArcGIS Maps for Office and it's still doing the same thing. I believe it's corrupted my Microsoft Office.
Hello Brett...I am sorry to hear you are having trouble with copy/paste. Is this issue still present? I ran a few quick run-throughs using the instruction above but was not able to reproduce this issue.
Best,
Shannon | Product Engineer