A good news: PC Plus and Shoppers Optimum will finally become one program: PC Optimum. On Feb 1, 2018, your points will be converted to PC Optimum points at their FULL value. I will try to earn more Shoppers Optimum points with 20X bonus now and keep them until the conversion.
Source:
https://www.facebook.com/HalifaxReTales/photos/a.642800749079794.1073741825.356656137694258/1944080485618474/?type=3&theater