Subcategories of "Field" and Time frame length settings do not persist in saved configurations

[the-raspberry-pi-guy]

With multiple plots (joint positions on a robot arm against clock - so numbered subcategories of the "position" field) and a custom time frame of 0.5s, when saving these settings and then re-opening the configuration file these settings do not persist, and must then be individually re-set for each plot.

Not sure if a bug, or an enhancement feature for the future - just have to work around it at the moment by inputting the settings on each use