Why do some marriage dates fail to attach to a couple?
Quite often I encounter marriage sources that fail to properly attach to a couple. The source will end up attached to all parties involved (parents of the bride & groom and the bride & groom) but the marriage date and location will fail to be recorded for the bride & groom. This seems to happen for marriage records in a wide range of countries (Canada, the Netherlands, US, England).
My solution is to disconnect and reconnect the source to one and sometimes both partners of a couple. I've encountered some situations where I've had to detach and reattach the marriage to both members of a couple before the marriage date/location "sticks".