while i do not know if it is possible nor the objective of your task, an alternative is to insert another sheet in workbook and use that worksheet as the source of exported data. then conduct the analysis and/or calcs on other worksheets using the source worksheet.
several years ago while conducting analysis on engines and compressors, that is what i ended up doing. the software had capabilities of exporting to excel, but not in a desirable format. therefore, i set up a worksheet that contained the exported data and then i made the analysis and calcs on other sheets by obtaining the data from the source worksheet.
good luck!
-pmover