The BC Rankings is pulled from the cacherstats website. It monitors certain caches to find cachers and their stats. If you haven't found one of those caches, you will not be on the list. There is information in the FAQ on their website on which caches are monitored and what you can do if you are not on the list. This list is also only updated twice a week.
The BCGA website also monitors all the caches in BC but it takes about 4 days to go through all the caches, so it will pick up your milestone eventually.
Also we have the ability to manually add your milestone, so if anyone thinks one has been missed they can email us and we will update it.