Assignee was changed
Status changed from New to Duplicate
Milestone changed from None to Release Candidate 2
Of course every broker has different swap and also swap changes within the same broker because interest rates change over time. However if you know the broker where you will use your EA the swap cost at valid at that moment swap can be backtested. Not to have any possibility to simulate swap cost it's not the best option for sure if we want to be as exact as possible in BTs.
Also swap should be subject to robustness testing, as it is a highly unpredictable parameter, thus the importance to test the sensitivity of the strategies to it.