Problem copying and pasting

I'm trying to copy and paste a graph from Excel to a
word document but when I past the bar chart into word the bars disappear and
the axes change values. It seems like all of the original formatting is
lost. I haven't had this problem before so I'm not sure why it's suddenly
become an issue. Even when i copy and paste within the same spreadsheet in
Excel the formatting changes and the graph is ruined. Any help would be really appreciated!