Fixed a bug in idenfiying references to test when no relevant sheet in cells to keep
Fixed a bug in idenfiying references to test when no relevant sheet in cells to keep

dberlin/excel_to_code,tamc/excel_to_code,jmptrader/excel_to_code,tamc/excel_to_code,dberlin/excel_to_code,tamc/excel_to_code,kevinmel2000/excel_to_code,tamc/excel_to_code,kevinmel2000/excel_to_code,jmptrader/excel_to_code