I have been trying to find the answer to a sporadic issue one of my users is having. She downloads an file from a reporting site and opens it directly in Excel 2010. She then saves the file to a document library by clicking on Save As and selecting the library she has mapped to a drive. This library includes several document metadata fields, including one required Managed Metadata field. Occassionally (more often than not), this field is greyed out and the user cannot select the value to save it. She than has to save the file to her computer and upload it using the upload form directly.
Has anyone come across this and if so is there a fix? Even if there's no fix, a cause would be good to know.