The version you recall clearly may contain details learned much later.

Memory is not a recording, it is a reassembly, and each time you go back to a scene you bring the current furniture with you. Facts learned afterwards get quietly stitched in, and the join does not show. That is why the clearest memories are not necessarily the truest ones; vividness measures how often you have visited, not how accurate the account is.

Hold your certainties about the past a little more loosely, especially where they concern other people. When someone remembers an event differently, treat it as extra information rather than a challenge. Between two accounts there is usually a third version neither of you has.