7 Replies Latest reply: Feb 5, 2015 7:22 AM by Joe Berry RSS

    External lookups slow after changing from xls to xlsx?

    Jason Lustig

      Using Monarch Pro 10.5, had an existing model with External Lookup to an xls file with no issues...completed quickly. Had the need to process Excel files greater than 65K rows so switched to External Lookup on xlsx...77K rows took 25 minutes to finish...any ideas? Thanks in advance.