11.1 Deviation lines disappear after run simulation and cannot be added anymore

[Yuri05]

If I add a deviation lines to PredictedVsObserved plot and run simulation after that: all deviation lines disappear in the plot.
They are also not shown in the chart editor anymore, so I cannot select/deselect them.

However: if I try to add a fold range which was added before run simulation: nothing happens (meaning that the deviation lines are still saved internally). Adding a fold range which was NOT added before works (and disappears again after the next run sim).

[Yuri05]

happens both in PK-Sim and MoBi.
@rwmcintosh @georgeDaskalakis @msevestre

[georgeDaskalakis]

@Yuri05 on it