Saving worksheet using a macro. Problem is that it is saving more rows than it needs to

I have a macro that saves a sheet from my workbook. I also have another macro that needs to load that same sheet into another workbook. The problem I was having is that when I tried to load the sheet into the workbook I was getting an error that said "the sheet I am trying to load will not work with the current workbook." I tried to save the current workbook as file with macro enabled. That did not work. I did notice that when trying to save the worksheet I also got an error. I think the problem is with my worksheet. It appears that I have alot of unnessasry rows that have no data in them. All of the blank rows are at the end of the data. I have 1048576 rows. How can I tell excel that I do not need those other rows before saving? Thanks