Using the chart toolbar to switch chart period / sizes on a milti-time-frame-chart
This functionality really does not work well, if at all properly when used with a chart with more than one data series.
For example. A chart with a 12 range primary, add a 60 range as a secondary (background - for use with another indicator etc).
Use the toolbar to flip to 60, and you end up with 2 60 series (expected). Flip back to 12, and you have 2 x 12 series!
I think it would make far more sense (and I cannot imagine this is not the expected behaviour), if the change only applied to the primary data series.
Any way to make it behave like this? (I suspect not, but got to ask as it would make life easier!)
