OIE Offline Expense Report Template

Our current offline expense report template has 60 rows for entering expense lines.  We would like to increase this.  How do I add additional rows?  I tried inserting additional rows and copying the previous row down on both the expense report worksheet and the cell link worksheet, but when I go to select  the expense type from the drop down list in the expense report workesheet on a new line it changes the expense type on all previous lines.