acceleration not correct after load state

[lidongke]

I found that when i load state from a xml that i had saved,the pos and the speed has no problem,but all vehicles' s acceleration will be set to 0.0 after load state.But i need the same acceleration with the step that i had saved.How can i solve this problem?
@namdre

[behrisch]

Currently you cannot. The state saving needs to be fixed.