ExcelReader reading blank lines from file that was disabled for editing

I had a file with 2 sheets in it, I only needed to parse the first sheet, however the reader was not able to pick up on any values, afterwards I opened the 2nd sheet which was disabled by default, after enabling it I re-ran the program and it picked up the values successfully.
If enabling is needed for the reader, is there a way to do this in the reader configuration?