No problem. I think it is more confusing to a horse if you are unsure what to do. Decide on your rules and be consistent with them, it is the best thing to do.
Think of being in high school, every teacher you have lets you get away with different things, some are stricter some don't care. But you adapt and change to them, they don't change, as you know what you can and cannot get away with in each class. I am trying to express that it does not matter what your horses history is, he will adapt to you and your rules.
What is not fair is when you go to the easy going history teacher and she flips out for nothing. Same is true when working with a horse, be consistent, be fair, do not keep changing the rules.