Can you tell me more. Positions are opened manually, or by strategy. If the answer is a strategy, can you post a link so we can test it. It is possible that some old strategy to not work as expected. Due to compatibility issues.
Stops should stay in one place, unless you use trail stop. The exception are the strategies that dynamically moving stops, or use a different algorithm.
You have to give us more details about how you placing entry orders.