If the loan renews more than once per year, or it renews within the same year that it was originated, you only report the renewal if there was an increase. You do this by either 1) reporting the loan once with the total amount of the renewal or 2) reporting it twice with the first amount on the first LAR entry and the amount of only the increase for the second LAR entry.
If the loan originated in 2009 and renewed once in 2010, report the entire renewal amount, regardless of if it increased, decreased, or stayed the same.
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Don't make me say, "I told you so!" Sincerely, your friendly Compliance Officer.