I have a coupe of questions on detrending:

1. As I understand, it's always a good idea to use detrending (Detrend=TRADES) in the Train mode. This way parameters are not affected by a trend if there is any. But when it comes to the Test mode it's better to use detrending only with asymmetric strategies? No need to use it with symmetric strategies like Workshop4? Am I right?

2. Second question is about using detrending wth trend strategies. What's the idea of detrending in the strategy that is based on trend leveraging? Maybe it makes sense because underlying trend (that is removed by detrending) is at a much higher timeframe than the trends identified by the strategy. But again, by nature a Trend Following system is supposed to take advantage of this trends. Why to remove them?