Buying LP in Canada with older cylinders???

I don't know about your horizontal tanks in the Lance, but the Feds just changed the recertification on portable cylinders. I believe the date was January 23, 2017 all portable cylinders must be re-certified at 10 years even though they were good for 12 years. When we went to Alaska in 2014 my tanks were borderline for 12 years. So when I was getting them re-certified I mention something to the pumper where we were headed. He told me that quite a few customers told him the following snowbird season that Canada didn't recognize the US re-cert. So when we were in Whitehorse, YK. we were near a fill station. I wondered over and asked the pumper and he told me "no they don't recognize the US re-cert". Also, the other day I was at a refill place and they did have the new memo with the start date on it taped to the pump. Kind of amazed me that it filtered down that quickly.