Unfortunately when using the cmd + I to invert the chart, won't have the same effect on the RSI indicator. The Inverted Relative Strength Index will have the inverted RSI showing in the same direction as the chart that was inverted using the available command in TradingView. Keep in mind that when flipping the chart back to the original direction, the Inverted Relative Strength Index won't flip with it, so you'll need to go back to the regular Relative Strength Index.