The article states you`ll get all or most of your principal back at maturity.  However, looking at RQJ, the 2022 fund, the current NAV of 19.73 compares with a par value per unit of 18.50 on the Feb report on RBC`s website.  That implies a bond price of 106.6 and therefore a capital loss at maturity, which needs to be factored into the decision process.