Update from the cops after investigating:
I’ve just heard back from a colleague and the way it works is that the pulse graph takes 3 data points per day which is why it doesn’t match up to a particular transaction - let me know if this makes sense? I’m so sorry for all for all the confusion caused - we’ll work on improving this in the future.
I have mentioned the fact that as a result the pulse is giving misleading information and makes it hard to reconcile transactions and end of data balances.