Why did some lines not load in Create journal in spreadsheet process?

Summary: When attempting to load a journal through the Create Journal in Spreadsheet routine only some of the lines loaded successfully. The other lines did not show any error message, they seemed to have gotten skipped.

Content (required): Create journal in spreadsheet - I was able to connect and add rows, the Key column populated when I added a new line. I submitted the journal however, it only loaded the last two (out of 20) rows into Oracle. The Row Status showed no error message, it just remained blank while the last two rows showed Row inserted successfully. I confirmed all GL combinations were enabled and active.