My company recently upgraded from Excel 2010 to 2013 and we have encountered a major issue. When using a custom combination of the column charts we discovered the labels on the x axis are displaying 1,2,3 etc instead of the text it should be displaying. 

This could be easily fixed but the same issue recurs each time the file is reopened. This happens particularly when the chart is controlled via a drop down list from the form controls. 

Is there a fix for this? I build a lot of interactive charts of this nature. I have to resort to 2010 for the time being. 

Regards,