I use local data online via a third-party software, and I find that MT20RT is no different from MT19RT; to change the data, I have to press the refresh button. I find that MT11RT's data changes automatically without needing to press the refresh button.
this video, I used METAKIT to get local data for MT11/19/20RT but However, to change the STOCK price on MT19/20RT, you have to press the refresh button, while on MT11RT the price changes automatically
metastock 19 dc.mp4