I am new to using the X-Ray tool but it seems to be replacing apostrophes from any Description items I write in Excel with spaces. I do Edit > Datasets... and fill in the Description cells in Excel. If I put something in like Mark's rating and then import the XML to a FGDB and look at the metadata it reads Mark s rating. If I update the XML from the FGDB and Edit > Datasets... again it appears as Mark s rating in Excel. I tried using two apostrophes (Mark''s) in case it was some kind of escape character thing in Excel but that just turns into 2 spaces.
ArcGIS 10.2 (no SP)
Excel 2007