Cell styles are lost after removing a column

Hi,

In Analysis for Office we are using Cell Styles in order to format certain columns (to put certain keyfigures in a color)

However, when we remove one column via Excel and/or Analysis for Excel functionality, the Cell Styles are completely lost for all columns in the workbook.

Is this normal behaviour ? Can we avoid this ? Because this makes Cell Styles quite useless...

thanks in advance.